Field Of View; Physical Camera Adjustment - Iteris RZ4 Advanced Installation Manual

5.2 Field Of View

A proper "Field Of View" (FOV) is crucial for optimal Vantage system operation. The following basic FOV
guidelines will help the user to obtain optimal Vantage system performance.
There are two parts to obtaining an appropriate FOV:
•
Physical camera mounting adjustment
•
Electronic camera lens adjustment

5.2.1 Physical Camera Adjustment

The camera should be mounted so that it is centered, as much as possible, in relation to the field of view
(vehicle approach). Extreme side shooting can result in reduced performance and vehicle occlusion. See
the section in this manual on "Occlusion" for more information.
Proper Mounting Height
The camera should be mounted at approximately 30 feet for optimal system performance. For lower
mountings, like a mast arm mount, a suitable camera extension bracket should be used to increase the
camera mounting height to a more workable elevation. A camera mounting height of 25 feet or more
can usually be obtained by using an extension bracket. Low mounting heights can result in reduced
system performance and vehicle occlusion. See the section in this manual on "Occlusion" for more
information.
How far can the camera typically see out at a mounting height of 30 feet? The basic formula for LEVEL
ground is:
For every one foot of height you can see out 10 feet. So, on level ground, at a 30 foot mounting height,
you should be able to get accurate detection as far as three hundred feet. This measurement is from the
camera mounting location, not from the intersection stop bar area.
Very Poor Mounting ‐ Side Shoot, Camera Not Centered
Figure 5.8
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