Axis M1065-LW - Page 39

AXISM1065-LWNetworkCamera
AXISVideoMotionDetection
Theltersizecanalsobesetbyenteringavaluebetween10and50intheeld.Thevaluecorrespondstothedistancefromthe
centerofthecrosstooneofthearrowheads.Thevalue50impliesthatanobjectmusttravelfromitsinitialpointtoonesixthofthe
imagewidthorheightbeforebeingtracked.Thevalue25implieshalfthatdistance,thatis,theobjectmusttraveladistanceofone
twelfthoftheimagewidthorheightbeforebeingtracked.
Short-LivedObjectIgnoreFilter
Theshort-livedobjectlterisusedtoavoiddetectingobjectsthatonlyappearforashortperiodoftime,suchaslightbeamsfroma
passingcarandquicklymovingshadows.Usethelterifsuchobjectscausealotoffalsedetections.
Theshort-livedobjectlterisusedtoavoidtrackingobjectsthatonlyappearforashortperiodoftime,suchaslightbeamsfroma
passingcarandquicklymovingshadows.Usethelterifsuchobjectscausealotofunwantedtrackedobjects.
Whentheshort-livedobjectlterisenabledandtheapplicationndsamovingobject,theobjectwillnotbereportedasdetected
(redpolygoninvisualconrmation)untilthesettimehaspassed.Thealarmsentbytheapplicationwillbesentwhentheobjectis
detected.Ifthealarmisusedtostartarecording,congurethepre-triggertimesothattherecordingalsoincludesthetimethe
objectmovedinthescenebeforebeingdetected.
Whentheshort-livedobjectlterisenabledandtheapplicationndsamovingobject,trackingwillnotstart(redpolygoninvisual
conrmation)untilthesettimeaspassed.Ifthealarmsentbytheapplicationisusedtostartarecording,congurethepre-trigger
timesothattherecordingalsoincludesthetimetheobjectmovedinthescenebeforetrackingstarted.
Toenablethelter:
1.SelecttheShort-livedobjectsoption.
2.ClickShort-livedobjects.
3.ClickEnable.
4.Enterthenumberofsecondsintheeld.Thenumberofsecondsistheminimumtimethatmustpassbeforetheobjectis
detected.Startwithasmallnumber.
5.Enterthenumberofsecondsintheeld.Thenumberofsecondsistheminimumtimethatmustpassbeforetracking
starts.Startwithasmallnumber.
6.ClickSavetoapplythelter.
7.ClickOK.
8.Usevisualconrmationtoverifythesettings.
9.Iftheresultisnotsatisfactory,increasetheltertimeinsmallsteps.
SmallObjectIgnoreFilter
Thesmallobjectlterisusedtoavoiddetectingobjectsthataretoosmall.Forexample,ifonlymovingcarsshouldbedetected,the
smallobjectltercanbeusedtoavoiddetectingpeopleandanimals.
Thesmallobjectlterisusedtoavoidtrackingobjectsthataretoosmall.Forexample,ifonlymovingcarsshouldbetracked,the
smallobjectltercanbeusedtoavoidtrackingpeopleandanimals.
Ifusingthesmallobjectlter,takeintoconsiderationthatanobjectfarfromthecameraappearssmallerthananobjectclosetothe
camera.Ifthelterissettoignoreobjectsthesizeofaperson,peoplethatareclosetobecameracanstillbedetectedbecause
theyarelargerthantheltersize.
Ifusingthesmallobjectlter,takeintoconsiderationthatanobjectfarfromthecameraappearssmallerthananobjectclosetothe
camera.Ifthelterissettoignoreobjectsthesizeofaperson,peoplethatareclosetobecameracanstillbetrackedbecause
theyarelargerthantheltersize.
Toenablethelter:
1.SelecttheSmallobjectsoption.
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