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IVMD | Configuration instructions Area settings | en 27
BOSCH Security Systems 1.0 | 2006.04
The pixel pitch is obtained by dividing the image sensor size by
the number of pixels. For sensors with 596 pixels, for example,
this gives:
1/2 inch: 5.95 mm/596 = 0.0100 mm
1/3 inch: 4.96 mm/596 = 0.0083 mm
1/4 inch: 3.69 mm/596 = 0.0062 mm
For such a 1/4 inch image sensor with a 28 mm lens:
camera constant = 28 mm/(0.0062 mm x 4) = 1129
For a 1/3 inch sensor with a 12 mm lens:
camera constant = 12 mm/(0.0083 mm x 4) = 361
Cube size:
Side length of the cubes (in meters).
A side length of 2 m (6 ft) corresponds approximately to the
height of a person.
i
NOTE!
If you change the camera constant, you must also change the
size of the cubes to suit the actual relative sizes in the image.