<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!--Created by American Financial Printing Inc., Powered by IRIS Carbon, Unique Code 623a0cb539fddb1110e10d96, Generated At Tue, 22 Mar 2022 17:52:55 GMT-->
<link:linkbase xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://imagesensing.com/role/OPERATINGLEASESDetails3" xlink:type="simple" xlink:href="aatc-20211231.xsd#OPERATINGLEASESDetails3" />
  <link:roleRef roleURI="http://imagesensing.com/role/OPERATINGLEASESDetails" xlink:type="simple" xlink:href="aatc-20211231.xsd#OPERATINGLEASESDetails" />
  <link:roleRef roleURI="http://imagesensing.com/role/IncomeStatement6" xlink:type="simple" xlink:href="aatc-20211231.xsd#IncomeStatement6" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails555" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails555" />
  <link:roleRef roleURI="http://imagesensing.com/role/InventoriesDetails" xlink:type="simple" xlink:href="aatc-20211231.xsd#InventoriesDetails" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails38" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails38" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails43" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails43" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails44" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails44" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails45" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails45" />
  <link:roleRef roleURI="http://imagesensing.com/role/StatementOfCashFlows7" xlink:type="simple" xlink:href="aatc-20211231.xsd#StatementOfCashFlows7" />
  <link:roleRef roleURI="http://imagesensing.com/role/BalanceSheet2" xlink:type="simple" xlink:href="aatc-20211231.xsd#BalanceSheet2" />
  <link:roleRef roleURI="http://imagesensing.com/role/IncomeStatement4" xlink:type="simple" xlink:href="aatc-20211231.xsd#IncomeStatement4" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails46" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails46" />
  <link:roleRef roleURI="http://imagesensing.com/role/OPERATINGLEASESDetails1" xlink:type="simple" xlink:href="aatc-20211231.xsd#OPERATINGLEASESDetails1" />
  <link:roleRef roleURI="http://imagesensing.com/role/OPERATINGLEASESDetails1Calc2" xlink:type="simple" xlink:href="aatc-20211231.xsd#OPERATINGLEASESDetails1Calc2" />
  <link:roleRef roleURI="http://imagesensing.com/role/DocumentAndEntityInformation1" xlink:type="simple" xlink:href="aatc-20211231.xsd#DocumentAndEntityInformation1" />
  <link:roleRef roleURI="http://imagesensing.com/role/BalanceSheetParenthetical3" xlink:type="simple" xlink:href="aatc-20211231.xsd#BalanceSheetParenthetical3" />
  <link:roleRef roleURI="http://imagesensing.com/role/StatementOfEquity8" xlink:type="simple" xlink:href="aatc-20211231.xsd#StatementOfEquity8" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes9" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes9" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes11" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes11" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes12" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes12" />
  <link:roleRef roleURI="http://imagesensing.com/role/OPERATINGLEASES" xlink:type="simple" xlink:href="aatc-20211231.xsd#OPERATINGLEASES" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes13" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes13" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes15" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes15" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes16" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes16" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes17" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes17" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes18" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes18" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes19" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes19" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes20" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes20" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails557" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails557" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes21" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes21" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes22" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes22" />
  <link:roleRef roleURI="http://imagesensing.com/role/LONGTERMDEBT" xlink:type="simple" xlink:href="aatc-20211231.xsd#LONGTERMDEBT" />
  <link:roleRef roleURI="http://imagesensing.com/role/Notes23" xlink:type="simple" xlink:href="aatc-20211231.xsd#Notes23" />
  <link:roleRef roleURI="http://imagesensing.com/role/DESCRIPTIONOFBUSINESSANDSIGNIFICANTACCOUNTINGPOLICIESPolicy" xlink:type="simple" xlink:href="aatc-20211231.xsd#DESCRIPTIONOFBUSINESSANDSIGNIFICANTACCOUNTINGPOLICIESPolicy" />
  <link:roleRef roleURI="http://imagesensing.com/role/DESCRIPTIONOFBUSINESSANDSIGNIFICANTACCOUNTINGPOLICIESTables" xlink:type="simple" xlink:href="aatc-20211231.xsd#DESCRIPTIONOFBUSINESSANDSIGNIFICANTACCOUNTINGPOLICIESTables" />
  <link:roleRef roleURI="http://imagesensing.com/role/InventoriesTables" xlink:type="simple" xlink:href="aatc-20211231.xsd#InventoriesTables" />
  <link:roleRef roleURI="http://imagesensing.com/role/OPERATINGLEASESTables" xlink:type="simple" xlink:href="aatc-20211231.xsd#OPERATINGLEASESTables" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesTables26" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesTables26" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesTables27" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesTables27" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesTables28" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesTables28" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesTables29" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesTables29" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails556" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails556" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesTables30" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesTables30" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesTables31" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesTables31" />
  <link:roleRef roleURI="http://imagesensing.com/role/LONGTERMDEBTTables" xlink:type="simple" xlink:href="aatc-20211231.xsd#LONGTERMDEBTTables" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails33" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails33" />
  <link:roleRef roleURI="http://imagesensing.com/role/DESCRIPTIONOFBUSINESSANDSIGNIFICANTACCOUNTINGPOLICIESDetails" xlink:type="simple" xlink:href="aatc-20211231.xsd#DESCRIPTIONOFBUSINESSANDSIGNIFICANTACCOUNTINGPOLICIESDetails" />
  <link:roleRef roleURI="http://imagesensing.com/role/OPERATINGLEASESDetails2" xlink:type="simple" xlink:href="aatc-20211231.xsd#OPERATINGLEASESDetails2" />
  <link:roleRef roleURI="http://imagesensing.com/role/OPERATINGLEASESNarrativeDetails" xlink:type="simple" xlink:href="aatc-20211231.xsd#OPERATINGLEASESNarrativeDetails" />
  <link:roleRef roleURI="http://imagesensing.com/role/INTANGIBLEASSETSDetails1" xlink:type="simple" xlink:href="aatc-20211231.xsd#INTANGIBLEASSETSDetails1" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails41" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails41" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails42" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails42" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails47" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails47" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails48" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails48" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails49" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails49" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails50" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails50" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails51" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails51" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails521" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails521" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails53" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails53" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails52" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails52" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails56" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails56" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails57" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails57" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails58" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails58" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails59" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails59" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails60" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails60" />
  <link:roleRef roleURI="http://imagesensing.com/role/LONGTERMDEBTDetails" xlink:type="simple" xlink:href="aatc-20211231.xsd#LONGTERMDEBTDetails" />
  <link:roleRef roleURI="http://imagesensing.com/role/LONGTERMDEBTDetailsNarrative" xlink:type="simple" xlink:href="aatc-20211231.xsd#LONGTERMDEBTDetailsNarrative" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails62" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails62" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails40" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails40" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails34" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails34" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails35" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails35" />
  <link:roleRef roleURI="http://imagesensing.com/role/NotesDetails36" xlink:type="simple" xlink:href="aatc-20211231.xsd#NotesDetails36" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/OPERATINGLEASESDetails3">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:title="us-gaap_LessorOperatingLeasePaymentsToBeReceived" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" xlink:title="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" xlink:title="Calculation : us-gaap_LessorOperatingLeasePaymentsToBeReceived to us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" xlink:title="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" xlink:title="Calculation : us-gaap_LessorOperatingLeasePaymentsToBeReceived to us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" xlink:title="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" xlink:title="Calculation : us-gaap_LessorOperatingLeasePaymentsToBeReceived to us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" xlink:title="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" xlink:title="Calculation : us-gaap_LessorOperatingLeasePaymentsToBeReceived to us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" xlink:title="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" xlink:title="Calculation : us-gaap_LessorOperatingLeasePaymentsToBeReceived to us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears" order="4" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" xlink:title="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LessorOperatingLeasePaymentsToBeReceived" xlink:to="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" xlink:title="Calculation : us-gaap_LessorOperatingLeasePaymentsToBeReceived to us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter" order="5" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/OPERATINGLEASESDetails">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseCost" xlink:label="us-gaap_LeaseCost" xlink:title="us-gaap_LeaseCost" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:label="us-gaap_OperatingLeaseCost" xlink:title="us-gaap_OperatingLeaseCost" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LeaseCost" xlink:to="us-gaap_OperatingLeaseCost" xlink:title="Calculation : us-gaap_LeaseCost to us-gaap_OperatingLeaseCost" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableLeaseCost" xlink:label="us-gaap_VariableLeaseCost" xlink:title="us-gaap_VariableLeaseCost" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LeaseCost" xlink:to="us-gaap_VariableLeaseCost" xlink:title="Calculation : us-gaap_LeaseCost to us-gaap_VariableLeaseCost" order="1" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/IncomeStatement6">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax" xlink:title="us-gaap_ComprehensiveIncomeNetOfTax" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" xlink:title="us-gaap_NetIncomeLoss" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_NetIncomeLoss" xlink:title="Calculation : us-gaap_ComprehensiveIncomeNetOfTax to us-gaap_NetIncomeLoss" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:title="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" xlink:title="Calculation : us-gaap_ComprehensiveIncomeNetOfTax to us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent" order="1" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails555">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="Calculation : us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding to us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:title="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:title="Calculation : us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding to us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" order="1" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/InventoriesDetails">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNet" xlink:label="us-gaap_InventoryNet" xlink:title="us-gaap_InventoryNet" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves" xlink:label="us-gaap_InventoryFinishedGoodsNetOfReserves" xlink:title="us-gaap_InventoryFinishedGoodsNetOfReserves" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InventoryNet" xlink:to="us-gaap_InventoryFinishedGoodsNetOfReserves" xlink:title="Calculation : us-gaap_InventoryNet to us-gaap_InventoryFinishedGoodsNetOfReserves" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryPartsAndComponentsNetOfReserves" xlink:label="us-gaap_InventoryPartsAndComponentsNetOfReserves" xlink:title="us-gaap_InventoryPartsAndComponentsNetOfReserves" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_InventoryNet" xlink:to="us-gaap_InventoryPartsAndComponentsNetOfReserves" xlink:title="Calculation : us-gaap_InventoryNet to us-gaap_InventoryPartsAndComponentsNetOfReserves" order="1" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails38">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:title="us-gaap_IntangibleAssetsNetExcludingGoodwill" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross" xlink:title="us-gaap_FiniteLivedIntangibleAssetsGross" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross" xlink:title="Calculation : us-gaap_IntangibleAssetsNetExcludingGoodwill to us-gaap_FiniteLivedIntangibleAssetsGross" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="Calculation : us-gaap_IntangibleAssetsNetExcludingGoodwill to us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" order="1" weight="-1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails43">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:title="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:title="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:title="Calculation : us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments to us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:title="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:title="Calculation : us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments to us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" order="1" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails44">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" xlink:title="us-gaap_IncomeTaxExpenseBenefit" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:title="us-gaap_CurrentIncomeTaxExpenseBenefit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_CurrentIncomeTaxExpenseBenefit" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit" xlink:title="us-gaap_CurrentFederalTaxExpenseBenefit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentFederalTaxExpenseBenefit" xlink:title="Calculation : us-gaap_CurrentIncomeTaxExpenseBenefit to us-gaap_CurrentFederalTaxExpenseBenefit" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:title="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:title="Calculation : us-gaap_CurrentIncomeTaxExpenseBenefit to us-gaap_CurrentStateAndLocalTaxExpenseBenefit" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit" xlink:title="us-gaap_CurrentForeignTaxExpenseBenefit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentForeignTaxExpenseBenefit" xlink:title="Calculation : us-gaap_CurrentIncomeTaxExpenseBenefit to us-gaap_CurrentForeignTaxExpenseBenefit" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:title="us-gaap_DeferredIncomeTaxExpenseBenefit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_DeferredIncomeTaxExpenseBenefit" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:title="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:title="Calculation : us-gaap_DeferredIncomeTaxExpenseBenefit to us-gaap_DeferredFederalIncomeTaxExpenseBenefit" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:title="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:title="Calculation : us-gaap_DeferredIncomeTaxExpenseBenefit to us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:title="us-gaap_DeferredForeignIncomeTaxExpenseBenefit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:title="Calculation : us-gaap_DeferredIncomeTaxExpenseBenefit to us-gaap_DeferredForeignIncomeTaxExpenseBenefit" order="2" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails45">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" xlink:title="us-gaap_IncomeTaxExpenseBenefit" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:title="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:title="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:title="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxCreditsResearch" xlink:label="us-gaap_IncomeTaxReconciliationTaxCreditsResearch" xlink:title="us-gaap_IncomeTaxReconciliationTaxCreditsResearch" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationTaxCreditsResearch" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_IncomeTaxReconciliationTaxCreditsResearch" order="3" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential" xlink:label="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential" xlink:title="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential" order="4" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="aatc-20211231.xsd#aatc_EffectiveIncomeTaxRateReconciliationDeductionBorrowingsForgivenessAmount" xlink:label="aatc_EffectiveIncomeTaxRateReconciliationDeductionBorrowingsForgivenessAmount" xlink:title="aatc_EffectiveIncomeTaxRateReconciliationDeductionBorrowingsForgivenessAmount" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="aatc_EffectiveIncomeTaxRateReconciliationDeductionBorrowingsForgivenessAmount" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to aatc_EffectiveIncomeTaxRateReconciliationDeductionBorrowingsForgivenessAmount" order="5" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" xlink:label="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" xlink:title="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes" order="6" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="aatc-20211231.xsd#aatc_IncomeTaxReconciliationDeferredTrueUp" xlink:label="aatc_IncomeTaxReconciliationDeferredTrueUp" xlink:title="aatc_IncomeTaxReconciliationDeferredTrueUp" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="aatc_IncomeTaxReconciliationDeferredTrueUp" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to aatc_IncomeTaxReconciliationDeferredTrueUp" order="7" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationDispositionOfBusiness" xlink:label="us-gaap_IncomeTaxReconciliationDispositionOfBusiness" xlink:title="us-gaap_IncomeTaxReconciliationDispositionOfBusiness" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationDispositionOfBusiness" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_IncomeTaxReconciliationDispositionOfBusiness" order="8" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:title="us-gaap_IncomeTaxReconciliationOtherAdjustments" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:title="Calculation : us-gaap_IncomeTaxExpenseBenefit to us-gaap_IncomeTaxReconciliationOtherAdjustments" order="9" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/StatementOfCashFlows7">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:title="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="Calculation : us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect to us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:title="us-gaap_NetCashProvidedByUsedInOperatingActivities" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:title="Calculation : us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease to us-gaap_NetCashProvidedByUsedInOperatingActivities" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" xlink:title="us-gaap_NetIncomeLoss" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetIncomeLoss" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_NetIncomeLoss" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Depreciation" xlink:label="us-gaap_Depreciation" xlink:title="us-gaap_Depreciation" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_Depreciation" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_Depreciation" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentForAmortization" xlink:label="us-gaap_AdjustmentForAmortization" xlink:title="us-gaap_AdjustmentForAmortization" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_AdjustmentForAmortization" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_AdjustmentForAmortization" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense" xlink:title="us-gaap_AllocatedShareBasedCompensationExpense" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_AllocatedShareBasedCompensationExpense" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:label="us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:title="us-gaap_DeferredIncomeTaxesAndTaxCredits" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_DeferredIncomeTaxesAndTaxCredits" order="4" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:label="us-gaap_GainLossOnDispositionOfAssets" xlink:title="us-gaap_GainLossOnDispositionOfAssets" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_GainLossOnDispositionOfAssets" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_GainLossOnDispositionOfAssets" order="5" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:title="us-gaap_IncreaseDecreaseInAccountsReceivable" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_IncreaseDecreaseInAccountsReceivable" order="6" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="us-gaap_IncreaseDecreaseInInventories" xlink:title="us-gaap_IncreaseDecreaseInInventories" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInInventories" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_IncreaseDecreaseInInventories" order="7" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:title="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" order="8" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:title="us-gaap_IncreaseDecreaseInAccountsPayable" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_IncreaseDecreaseInAccountsPayable" order="9" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:title="us-gaap_IncreaseDecreaseInAccruedLiabilities" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_IncreaseDecreaseInAccruedLiabilities" order="10" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncome" xlink:label="us-gaap_OtherNonoperatingIncome" xlink:title="us-gaap_OtherNonoperatingIncome" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_OtherNonoperatingIncome" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInOperatingActivities to us-gaap_OtherNonoperatingIncome" order="11" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:title="us-gaap_NetCashProvidedByUsedInInvestingActivities" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:title="Calculation : us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease to us-gaap_NetCashProvidedByUsedInInvestingActivities" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToDevelopSoftware" xlink:label="us-gaap_PaymentsToDevelopSoftware" xlink:title="us-gaap_PaymentsToDevelopSoftware" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsToDevelopSoftware" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInInvestingActivities to us-gaap_PaymentsToDevelopSoftware" order="0" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInInvestingActivities to us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" order="1" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:title="us-gaap_NetCashProvidedByUsedInFinancingActivities" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:title="Calculation : us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease to us-gaap_NetCashProvidedByUsedInFinancingActivities" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:label="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:title="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInFinancingActivities to us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" order="0" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="us-gaap_ProceedsFromStockOptionsExercised" xlink:title="us-gaap_ProceedsFromStockOptionsExercised" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromStockOptionsExercised" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInFinancingActivities to us-gaap_ProceedsFromStockOptionsExercised" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt" xlink:title="us-gaap_ProceedsFromIssuanceOfDebt" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromIssuanceOfDebt" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInFinancingActivities to us-gaap_ProceedsFromIssuanceOfDebt" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="us-gaap_PaymentsOfDividends" xlink:title="us-gaap_PaymentsOfDividends" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_PaymentsOfDividends" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInFinancingActivities to us-gaap_PaymentsOfDividends" order="3" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts" xlink:title="us-gaap_PaymentsOfDebtIssuanceCosts" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_PaymentsOfDebtIssuanceCosts" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInFinancingActivities to us-gaap_PaymentsOfDebtIssuanceCosts" order="4" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfMediumTermNotes" xlink:label="us-gaap_ProceedsFromIssuanceOfMediumTermNotes" xlink:title="us-gaap_ProceedsFromIssuanceOfMediumTermNotes" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromIssuanceOfMediumTermNotes" xlink:title="Calculation : us-gaap_NetCashProvidedByUsedInFinancingActivities to us-gaap_ProceedsFromIssuanceOfMediumTermNotes" order="5" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:title="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:title="Calculation : us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease to us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" order="3" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/BalanceSheet2">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets" xlink:title="us-gaap_Assets" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent" xlink:title="us-gaap_AssetsCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_AssetsCurrent" xlink:title="Calculation : us-gaap_Assets to us-gaap_AssetsCurrent" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:title="us-gaap_CashAndCashEquivalentsAtCarryingValue" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:title="Calculation : us-gaap_AssetsCurrent to us-gaap_CashAndCashEquivalentsAtCarryingValue" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="us-gaap_AccountsReceivableNetCurrent" xlink:title="us-gaap_AccountsReceivableNetCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AccountsReceivableNetCurrent" xlink:title="Calculation : us-gaap_AssetsCurrent to us-gaap_AccountsReceivableNetCurrent" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNet" xlink:label="us-gaap_InventoryNet" xlink:title="us-gaap_InventoryNet" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_InventoryNet" xlink:title="Calculation : us-gaap_AssetsCurrent to us-gaap_InventoryNet" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:title="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:title="Calculation : us-gaap_AssetsCurrent to us-gaap_PrepaidExpenseAndOtherAssetsCurrent" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet" xlink:title="us-gaap_PropertyPlantAndEquipmentNet" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_PropertyPlantAndEquipmentNet" xlink:title="Calculation : us-gaap_Assets to us-gaap_PropertyPlantAndEquipmentNet" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="us-gaap_PropertyPlantAndEquipmentGross" xlink:title="us-gaap_PropertyPlantAndEquipmentGross" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentGross" xlink:title="Calculation : us-gaap_PropertyPlantAndEquipmentNet to us-gaap_PropertyPlantAndEquipmentGross" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FurnitureAndFixturesGross" xlink:label="us-gaap_FurnitureAndFixturesGross" xlink:title="us-gaap_FurnitureAndFixturesGross" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentGross" xlink:to="us-gaap_FurnitureAndFixturesGross" xlink:title="Calculation : us-gaap_PropertyPlantAndEquipmentGross to us-gaap_FurnitureAndFixturesGross" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseholdImprovementsGross" xlink:label="us-gaap_LeaseholdImprovementsGross" xlink:title="us-gaap_LeaseholdImprovementsGross" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentGross" xlink:to="us-gaap_LeaseholdImprovementsGross" xlink:title="Calculation : us-gaap_PropertyPlantAndEquipmentGross to us-gaap_LeaseholdImprovementsGross" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MachineryAndEquipmentGross" xlink:label="us-gaap_MachineryAndEquipmentGross" xlink:title="us-gaap_MachineryAndEquipmentGross" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentGross" xlink:to="us-gaap_MachineryAndEquipmentGross" xlink:title="Calculation : us-gaap_PropertyPlantAndEquipmentGross to us-gaap_MachineryAndEquipmentGross" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BuildingsAndImprovementsGross" xlink:label="us-gaap_BuildingsAndImprovementsGross" xlink:title="us-gaap_BuildingsAndImprovementsGross" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentGross" xlink:to="us-gaap_BuildingsAndImprovementsGross" xlink:title="Calculation : us-gaap_PropertyPlantAndEquipmentGross to us-gaap_BuildingsAndImprovementsGross" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:title="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:title="Calculation : us-gaap_PropertyPlantAndEquipmentNet to us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" order="1" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet" xlink:label="us-gaap_DeferredIncomeTaxAssetsNet" xlink:title="us-gaap_DeferredIncomeTaxAssetsNet" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_DeferredIncomeTaxAssetsNet" xlink:title="Calculation : us-gaap_Assets to us-gaap_DeferredIncomeTaxAssetsNet" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset" xlink:title="us-gaap_OperatingLeaseRightOfUseAsset" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset" xlink:title="Calculation : us-gaap_Assets to us-gaap_OperatingLeaseRightOfUseAsset" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:title="us-gaap_FiniteLivedIntangibleAssetsNet" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:title="Calculation : us-gaap_Assets to us-gaap_FiniteLivedIntangibleAssetsNet" order="4" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" xlink:title="us-gaap_LiabilitiesAndStockholdersEquity" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity" xlink:title="us-gaap_StockholdersEquity" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_StockholdersEquity" xlink:title="Calculation : us-gaap_LiabilitiesAndStockholdersEquity to us-gaap_StockholdersEquity" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue" xlink:title="us-gaap_PreferredStockValue" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_PreferredStockValue" xlink:title="Calculation : us-gaap_StockholdersEquity to us-gaap_PreferredStockValue" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue" xlink:title="us-gaap_CommonStockValue" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_CommonStockValue" xlink:title="Calculation : us-gaap_StockholdersEquity to us-gaap_CommonStockValue" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital" xlink:title="us-gaap_AdditionalPaidInCapital" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_AdditionalPaidInCapital" xlink:title="Calculation : us-gaap_StockholdersEquity to us-gaap_AdditionalPaidInCapital" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:title="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:title="Calculation : us-gaap_StockholdersEquity to us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:title="us-gaap_RetainedEarningsAccumulatedDeficit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:title="Calculation : us-gaap_StockholdersEquity to us-gaap_RetainedEarningsAccumulatedDeficit" order="4" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities" xlink:title="us-gaap_Liabilities" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_Liabilities" xlink:title="Calculation : us-gaap_LiabilitiesAndStockholdersEquity to us-gaap_Liabilities" order="1" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent" xlink:title="us-gaap_LiabilitiesCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_LiabilitiesCurrent" xlink:title="Calculation : us-gaap_Liabilities to us-gaap_LiabilitiesCurrent" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent" xlink:title="us-gaap_AccountsPayableCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_AccountsPayableCurrent" xlink:title="Calculation : us-gaap_LiabilitiesCurrent to us-gaap_AccountsPayableCurrent" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProductWarrantyAccrualClassifiedCurrent" xlink:label="us-gaap_ProductWarrantyAccrualClassifiedCurrent" xlink:title="us-gaap_ProductWarrantyAccrualClassifiedCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_ProductWarrantyAccrualClassifiedCurrent" xlink:title="Calculation : us-gaap_LiabilitiesCurrent to us-gaap_ProductWarrantyAccrualClassifiedCurrent" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:title="us-gaap_EmployeeRelatedLiabilitiesCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:title="Calculation : us-gaap_LiabilitiesCurrent to us-gaap_EmployeeRelatedLiabilitiesCurrent" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="us-gaap_OtherLiabilitiesCurrent" xlink:title="us-gaap_OtherLiabilitiesCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_OtherLiabilitiesCurrent" xlink:title="Calculation : us-gaap_LiabilitiesCurrent to us-gaap_OtherLiabilitiesCurrent" order="3" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredRevenueCurrent" xlink:label="us-gaap_DeferredRevenueCurrent" xlink:title="us-gaap_DeferredRevenueCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_DeferredRevenueCurrent" xlink:title="Calculation : us-gaap_LiabilitiesCurrent to us-gaap_DeferredRevenueCurrent" order="4" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent" xlink:title="us-gaap_OperatingLeaseLiabilityCurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent" xlink:title="Calculation : us-gaap_LiabilitiesCurrent to us-gaap_OperatingLeaseLiabilityCurrent" order="5" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="us-gaap_ShortTermBorrowings" xlink:title="us-gaap_ShortTermBorrowings" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_ShortTermBorrowings" xlink:title="Calculation : us-gaap_LiabilitiesCurrent to us-gaap_ShortTermBorrowings" order="6" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:title="us-gaap_OperatingLeaseLiabilityNoncurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:title="Calculation : us-gaap_Liabilities to us-gaap_OperatingLeaseLiabilityNoncurrent" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="us-gaap_LongTermDebtNoncurrent" xlink:title="us-gaap_LongTermDebtNoncurrent" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_LongTermDebtNoncurrent" xlink:title="Calculation : us-gaap_Liabilities to us-gaap_LongTermDebtNoncurrent" order="2" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/IncomeStatement4">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" xlink:title="us-gaap_NetIncomeLoss" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:title="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:title="Calculation : us-gaap_NetIncomeLoss to us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss" xlink:title="us-gaap_OperatingIncomeLoss" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_OperatingIncomeLoss" xlink:title="Calculation : us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest to us-gaap_OperatingIncomeLoss" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses" xlink:title="us-gaap_OperatingExpenses" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingExpenses" xlink:title="Calculation : us-gaap_OperatingIncomeLoss to us-gaap_OperatingExpenses" order="0" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SellingAndMarketingExpense" xlink:label="us-gaap_SellingAndMarketingExpense" xlink:title="us-gaap_SellingAndMarketingExpense" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_SellingAndMarketingExpense" xlink:title="Calculation : us-gaap_OperatingExpenses to us-gaap_SellingAndMarketingExpense" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense" xlink:title="us-gaap_GeneralAndAdministrativeExpense" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_GeneralAndAdministrativeExpense" xlink:title="Calculation : us-gaap_OperatingExpenses to us-gaap_GeneralAndAdministrativeExpense" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="us-gaap_ResearchAndDevelopmentExpense" xlink:title="us-gaap_ResearchAndDevelopmentExpense" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_ResearchAndDevelopmentExpense" xlink:title="Calculation : us-gaap_OperatingExpenses to us-gaap_ResearchAndDevelopmentExpense" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GrossProfit" xlink:label="us-gaap_GrossProfit" xlink:title="us-gaap_GrossProfit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_GrossProfit" xlink:title="Calculation : us-gaap_OperatingIncomeLoss to us-gaap_GrossProfit" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:label="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:title="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_GrossProfit" xlink:to="us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:title="Calculation : us-gaap_GrossProfit to us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfRevenue" xlink:label="us-gaap_CostOfRevenue" xlink:title="us-gaap_CostOfRevenue" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_GrossProfit" xlink:to="us-gaap_CostOfRevenue" xlink:title="Calculation : us-gaap_GrossProfit to us-gaap_CostOfRevenue" order="1" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense" xlink:title="us-gaap_OtherNonoperatingIncomeExpense" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_OtherNonoperatingIncomeExpense" xlink:title="Calculation : us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest to us-gaap_OtherNonoperatingIncomeExpense" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpenseDebt" xlink:label="us-gaap_InterestExpenseDebt" xlink:title="us-gaap_InterestExpenseDebt" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_InterestExpenseDebt" xlink:title="Calculation : us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest to us-gaap_InterestExpenseDebt" order="2" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" xlink:title="us-gaap_IncomeTaxExpenseBenefit" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeTaxExpenseBenefit" xlink:title="Calculation : us-gaap_NetIncomeLoss to us-gaap_IncomeTaxExpenseBenefit" order="1" weight="-1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails46">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:title="us-gaap_DeferredTaxAssetsLiabilitiesNet" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="us-gaap_DeferredTaxAssetsGross" xlink:title="us-gaap_DeferredTaxAssetsGross" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:to="us-gaap_DeferredTaxAssetsGross" xlink:title="Calculation : us-gaap_DeferredTaxAssetsLiabilitiesNet to us-gaap_DeferredTaxAssetsGross" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" xlink:title="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsInventory" xlink:label="us-gaap_DeferredTaxAssetsInventory" xlink:title="us-gaap_DeferredTaxAssetsInventory" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsInventory" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxAssetsInventory" order="1" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" xlink:title="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" order="2" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" xlink:label="us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" xlink:title="us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" order="3" weight="-1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves" xlink:title="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsWarrantyReserves" order="4" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets" xlink:label="us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets" xlink:title="us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets" order="5" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:title="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" order="6" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:title="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" order="7" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="aatc-20211231.xsd#aatc_DeferredTaxAssetsPropertyPlantAndEquipmentAndOther" xlink:label="aatc_DeferredTaxAssetsPropertyPlantAndEquipmentAndOther" xlink:title="aatc_DeferredTaxAssetsPropertyPlantAndEquipmentAndOther" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="aatc_DeferredTaxAssetsPropertyPlantAndEquipmentAndOther" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to aatc_DeferredTaxAssetsPropertyPlantAndEquipmentAndOther" order="8" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment" xlink:label="us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment" xlink:title="us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment" order="9" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment" xlink:label="us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment" xlink:title="us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment" xlink:title="Calculation : us-gaap_DeferredTaxAssetsGross to us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment" order="10" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:title="us-gaap_DeferredTaxAssetsValuationAllowance" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:title="Calculation : us-gaap_DeferredTaxAssetsLiabilitiesNet to us-gaap_DeferredTaxAssetsValuationAllowance" order="1" weight="-1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/OPERATINGLEASESDetails1">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:title="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:title="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:title="Calculation : us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue to us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:title="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:title="Calculation : us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue to us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" order="1" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/OPERATINGLEASESDetails1Calc2">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:title="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="us-gaap_OperatingLeaseLiability" xlink:title="us-gaap_OperatingLeaseLiability" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_OperatingLeaseLiability" xlink:title="Calculation : us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue to us-gaap_OperatingLeaseLiability" order="0" weight="1" use="optional" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:title="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <link:calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:title="Calculation : us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue to us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" order="1" weight="1" use="optional" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/DocumentAndEntityInformation1" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/BalanceSheetParenthetical3" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/StatementOfEquity8" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes9" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes11" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes12" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/OPERATINGLEASES" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes13" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes15" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes16" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes17" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes18" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes19" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes20" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails557" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes21" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes22" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/LONGTERMDEBT" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/Notes23" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/DESCRIPTIONOFBUSINESSANDSIGNIFICANTACCOUNTINGPOLICIESPolicy" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/DESCRIPTIONOFBUSINESSANDSIGNIFICANTACCOUNTINGPOLICIESTables" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/InventoriesTables" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/OPERATINGLEASESTables" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesTables26" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesTables27" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesTables28" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesTables29" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails556" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesTables30" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesTables31" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/LONGTERMDEBTTables" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails33" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/DESCRIPTIONOFBUSINESSANDSIGNIFICANTACCOUNTINGPOLICIESDetails" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/OPERATINGLEASESDetails2" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/OPERATINGLEASESNarrativeDetails" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/INTANGIBLEASSETSDetails1" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails41" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails42" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails47" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails48" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails49" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails50" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails51" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails521" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails53" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails52" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails56" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails57" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails58" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails59" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails60" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/LONGTERMDEBTDetails" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/LONGTERMDEBTDetailsNarrative" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails62" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails40" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails34" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails35" />
  <link:calculationLink xlink:type="extended" xlink:role="http://imagesensing.com/role/NotesDetails36" />
</link:linkbase>