Documentation for C-Werk 2.0.

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The camera tampering detection analyzes the video image to determine the nature of its change.

Name of detection tool analysis

Analysis result

Compression artifacts analysis

The detection triggers when compression artifacts appear on the image

Quality degradation analysis

The detection triggers when the video image received from a video camera loses quality.

For example, the detection tool may trigger upon excessive light, loss of focus, lens blocking, or sudden drop in scene illumination.

Image noise analysis

The detection triggers when video noise appears on the image

For example, the detection tool may trigger upon low bit rate or ripples in the image (snow)

Scene change analysis

The detection triggers when the background of the video image changes, indicating a change in the position of the video camera in space

Blurred image analysis

The detection triggers when the blurred contours appear on the image.

For example, the detection tool may trigger when the image is blurry due to a dirty lens.