The following diagram indicates the recommended camera height in relation to the maximum detection distance:

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The following drawing and notes indicates the appropriate camera orientation:

Object height: the pixel height of a standing person (1.7m height) must be at least 10% of the image height (e.g. if the height of the visualized image is 576 pixels, the height of a person standing at the end of the detection zone – Max Detection distance from the camera – must be above 58 pixels). The maximum height of a standing person must be 60% of the image height.

Tilt angle: the camera must be sufficiently oriented towards the ground so that the center of the image is under the horizon line. The side view of a person to be detected must be sufficient: Min Detection distance > Camera height / 2.

Roll angle: The roll angle of the camera must be nearly equal to zero.