Axis Q8685-E - Page 40

AXISQ8685-EPTZNetworkCamera
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.
•Toonlydetectashinglight,selectalowsensitivity.Inothercaseshighsensitivityisrecommended.
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