Iteris VersiCam - Page 16

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VersiCamCameraFieldofViewCalculations
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Itispossibletocalculatethemountingheightnecessaryforanyinstallationusingthefollowingmath.
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Assumptions:
1. CameraHFOVisatmaximumWAadjustmentof85
o
.
2. MinimumHFOVimageshouldincludeaminimumof2of3trafficlanes.
3. Typicaltrafficlanesare9’,10’,11’or12’wide.
4. Cameramountingheightrangeis10’to15’.
5. MountingheightfordeterminingtheminimumcameratoROIdistanceis0’(worsecase).
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Thisexampleisforthreetrafficlanes.
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ObtainingtheCameradistancetotheRegionOfInterest(ROI)forvariousmountingheightssimplyuses
theFOV (0’MH)distancecalculatedpreviouslyand usesit asthe hypotenuseofatriangleas described
below and then using Pythagorean theorem with the desired mounting
 height solves for the camera
setback.
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