Axis Q3505-VE 9 mm Manual de usuario Pagina 22

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 69
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 21
AXISQ3505–VEFixedDomeNetworkCamera
VideoandAudio
Important
UseWDRincombinationwithautomaticexposurecontrol.Otherexposuresettingscouldgiveundesirableresults.
Note
WDRisonlyavailableifyouhaveselectedacapturemodethatsupportsWDR.SeeCongureCaptureModeonpage10.
ExposureSettings
Conguretheexposuresettingstosuittheimagequalityrequirementsinrelationtolighting,framerateandbandwidth
considerations.
Exposurevalue-Clickinthebartone-tunetheexposure.
Exposurecontrol-Thissettingisusedtoadapttotheamountoflightused.Automaticisthedefaultsettingandcanbeusedin
mostsituations.Theshutterspeedisautomaticallysettoproduceoptimumimagequality.Flicker-free50or60Hzisusedtoremove
ickerwhichcanbecausedbyuorescentandotherlightsources.TheHoldcurrentoptionlocksthecurrentexposuresettings.
EnableBacklightcompensation-Enablethisoptionifabrightspotoflight,forexamplealightbulb,causesotherareasin
theimagetoappeartoodark.
Exposurezones-Thissettingdetermineswhichpartoftheimageisusedtocalculatetheexposure.Formostsituations,theAuto
settingcanbeused.Forparticularrequirements,selectapredenedarea.
Exposurepriority-WhenMotionisprioritizedandmaximumShuttertimeissettoasmallvalue,motionblurintheimageis
minimized.Thiscanbeusefulforrecognitionofmovingobjectssuchaspeopleandvehicles.However,prioritizingmotionmaycause
anincreaseinimagenoise,especiallyinlowlightsituations.WhenLownoiseisprioritizedandGainissettoasmallvalue,image
noiseisminimized.Thelesizeisreduced,whichcanbeusefulifstoragespaceorbandwidthislimited.However,prioritizinglow
noisemayresultinaverydarkimage,especiallyinlowlightsituations.
Shutter&Gain
Theshutterandgainsettingsaffecttheamountofmotionblurandnoiseintheimage.Toadapttodifferentlighting,available
storagespaceandbandwidth,itisoftennecessarytoprioritizeeitherlowmotionblurorlownoise.TheAxisproductallows
usingdifferentprioritizationinnormallightandinlowlight.
Shutterspeedisrelatedtotheamountoftimetheshutterisopenedandismeasuredinseconds(s).Aslowshutterspeedallows
morelighttoreachthesensorandcanhelpproduceabrighterimageinlowlightsituations.Ontheotherhand,aslowshutter
speedcancausemovingobjectstoappearblurry.
SetShutterto
Autotosettheshutterspeedautomatically.Ifrequired,useMaxshuttertolimittheshutterspeedtopreventtheframe
ratefrombeingreduced.Forexample,toget30fps,setMaxshutterto1/30.
Fixedtouseaxedshutterspeed.
Gain,measuredindecibel(dB),istheamountofamplicationappliedtotheimage.Ahighgainmayprovideabetterimageinlow
lightsituationsbutwillincreasetheamountofimagenoise.
SetGainto
Autotosetthegainautomatically.Ifrequired,useMaxgaintolimittheappliedgain.
Fixedtouseaxedgain.
WhenShutterandGainarebothsettoAuto,itispossibletosetthePrioritybetweenlowmotionblurandlownoisemanuallyandto
useadifferentPriorityinNormalLightandinLowLight.
Example
Consideranareawherepeopleorvehiclesmoveduringtheday,butwherethereshouldbenomovementsduringnight.Tobeableto,
forexample,recognizefacesorlicenseplates,movethenormallightpriorityslidertowardlowmotionblur.Atnighttime,motion
22
Vista de pagina 21
1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 68 69

Comentarios a estos manuales

Sin comentarios