Axis Q1931-E Uživatelský manuál Strana 17

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AXISQ1931–EPTMountThermalNetworkCamera
Video
ToselectadefaultstreamprolefortheLiveViewpage,gotoSetup>LiveViewCong.
CameraSettings
TheVideo>CameraSettingspageprovidesaccesstoadvancedimagesettingsfortheAxisproduct.
ImageAppearance
TheimageBrightnesscanbeadjustedintherange0–100,whereahighervalueproducesabrighterimage.
IncreasingtheSharpnesscanincreasebandwidthusage.Asharperimagemightincreaseimagenoiseespeciallyinlowdynamic
conditions.Alowersettingreducesimagenoise,butthewholeimagewillappearlesssharp.
TheContrastchangestherelativedifferenceinthermalradiation.Itcanbeadjustedusingtheslidebar.
ExposureSettings
Conguretheexposuresettingstosuittheimagequalityrequirementsinrelationtotemperaturevariationsinthescene.
Automaticgaincontrol-Thissettingisusedtoautomaticallyadjustthegaintoanappropriaterange,theweakertheimagesignal,
thestrongerthegain.SelecttheLinearorEqualizationautomaticgaincontrolmethod.Thelatterusesahistogramequalization
method,whichadjuststhegaindynamicallybydistributingthemostfrequentintensityvalues.
Exposurezones-Thissettingsdetermineswhichpartoftheimageisusedtocalculatetheexposure.Formostsituations,theAuto
settingcanbeused.Forparticularrequirement,selectDenedandthenclickEditandselectoneofthepredenedareas.
Gain-Thissettingcontrolsthemaximumgain.Loweringthegainreducesthecontrastinthethermalimage.
Overlay
Overlaysareusedtoprovideextrainformation,forexampleforforensicvideoanalysisorduringproductinstallationand
conguration.Overlaysaresuperimposedoverthevideostream.
Anoverlaytextcandisplaythecurrentdateandtime,oratextstring.Whenusingatextstring,modierscanbeusedtodisplay
informationsuchasthecurrentbitrateorthecurrentframerate.Forinformationaboutavailablemodiers,seeFileNaming&
Date/TimeFormatsintheonlinehelp
.
Itisalsopossibletodisplaytextwhenanactionruleistriggered,seeUseOverlayTextinanActionRule.
Toenableoverlays:
1.GotoVideo>VideoStreamandselecttheImagetab.
2.Toincludeanoverlayimage,selectIncludeoverlayimageatthecoordinates.Theoverlayimagemustrstbeuploadedto
theAxisproduct,seeOverlayImage.
3.Toincludedateandtime,selectIncludedateandIncludetime.
4.Toincludeatextstring,selectIncludetextandenterthetextintheeld.Modierscanbeused,seeFileNaming&
Date/TimeFormatsintheonlinehelp
.
5.Denetextoverlaycharacteristicsintherelevantelds.
6.ClickSave.
Tomodifythedateandtimeformat,gotoSystemOptions>Date&Time.SeeDate&Timeonpage39.
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