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26 en | Area settings IVMD | Configuration instructions
1.0 | 2006.04 BOSCH Security Systems
Roll angle:
The angle by which the calibration plane is tilted.
The setting can deviate from the horizontal by up to 10 degrees.
Elevation:
The vertical distance from the camera to the ground plane of
the captured image – typically the height of the mounted cam-
era above the ground (in meters).
Camera constant:
The camera constant determines the basic settings for calibra-
tion. The default value of 1000 is preset and should only be
adjusted if the actual camera constant significantly deviates
from this preset. The camera constant is used to compensate
spherical distortions from the combination of image sensor and
lens.
The camera constant is a function of the focal length of the
camera's lens and the pixel pitch of the image sensor. It is cal-
culated with the following formula:
Camera constant = focal length [mm]/(pixel pitch [mm] x 4)