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AXISQ6055-CPTZNetworkCamera
Aboutdetectors
Parameter
ObjectSize
History
Sensitivity
Description
Objectsizerelativetowindow
size.
Objectmemorylength.
Differenceinluminance
betweenbackgroundand
object.
Highlevel(100%)
Onlyverylargeobjectstrigger
motiondetection.
Anobjectthatappearsin
thewindowtriggersmotion
detectionforalongtime
beforeitisconsideredas
non-moving.
Ordinarycoloredobjectson
ordinarybackgroundstrigger
motiondetection.
Mediumlevel(50%)
Alargedifferenceinluminance
isrequiredtotriggermotion
detection.
Lowlevel(0%)
Evenverysmallobjectstrigger
motiondetection.
Anobjectthatappearsin
thewindowtriggersmotion
detectiononlyforaveryshort
timebeforeitisconsideredas
non-moving.
Onlyverybrightobjectson
adarkbackgroundtrigger
motiondetection.
Recommendedvalues
5–15%60–90%75–95%
Defaultvalues
15%90%90%
Note
•Totriggeronsmallobjectsormovements,useseveralsmallmotiondetectionwindowsratherthanonelargewindow,
andselectalowobjectsize.
•Toavoidtriggeringonsmallobjects,selectahighobjectsize.
•Whilemonitoringanareawheremovingobjectsarenotexpected,selectahighhistorylevel.Thiswillcausemotion
detectiontotriggeraslongastheobjectispresentinthewindow.
•Toonlydetectashinglight,selectalowsensitivity.Inothercaseshighsensitivityisrecommended.
BasicVideoAnalytics
TheBasicVideoAnalyticssectionincludethefollowingdetectors:
•ObjectRemoved,seepage35
•Enter/ExitDetector,seepage36
•FenceDetector,seepage37
•ObjectCounter,seepage37
Important
•Toactivateadetector,thesavedpresetmustbeselectedinthedrop-downlist.Thedetectorwillonlybeenabledatthe
preset,seeAboutpresetpositionsonpage28.NotethattheAreaofinterestandObjectsizearenotvisibleinPreset
Positions,onlyundertheDetectorsmenu.Ifthepan/tilt/zoompositionischanged,thedetectorisdisabled.
•Thedetectorwillnotregisteranobjectifthespeedoftheobjectistoohigh,iftheobjectistooclosetothecamera,ifthe
differenceinluminancebetweentheobjectandthebackgroundisinsufcient,orifthecameraisautofocusing.
ObjectRemoved
ObjectRemovedisusedtotriggeranalarmifadetectedobjectwithinapre-denedareaofinteresthasdisappeared.Dothe
followingtosetthedetector:
Note
UsetheDrawingOpacityslidebartodenehowtransparenttheareaofinterestorobjectsizeshapeshouldbe.Note
thatthischangewillnotbesaved.
35
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