Axis F44 Manual do Utilizador descarregar pdf (Página 29)

AXISF44MainUnit

Detectors

Note

•Usingthemotiondetectionfeaturemaydecreasetheproduct’soverallperformance.

•ThepositionoftheMotionDetectionWindowisrelativetotheorientationoftheCamera.Changingtheorientationofthe

camerawillalsochangethepositionoftheMotionDetectionWindow.

SetUpMotionDetectionWindows

TosetupamotiondetectionIncludeWindow,followtheseinstructions:

1.GotoDetectors>MotionDetection.

2.SelecttheCongureIncludedWindowsoptionandclickNew.Selectthenewwindowinthelistofwindowsand

enteradescriptivename.

3.Adjustthesize(dragthebottomright-handcorner)andtheposition(clickonthetextatthetopanddragtothedesired

position)ofthewindow.

4.AdjusttheObjectSize,HistoryandSensitivityprolesliders(seeMotionDetectionParametersfordetails).Anydetected

motionwithinanactivewindowisindicatedbyredpeaksintheActivitywindow.

5.ClickSave.

Toexcludepartsoftheincludewindow,selecttheCongureExcludedWindowsandpositiontheexcludewindowwithinthe

includewindow.

Todeleteanincludeorexcludewindow,selectthewindowinthelistofwindowsandclickDel.

MotionDetectionParameters

Theparameterscontrollingmotiondetectionaredescribedinthetablebelow:

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%

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