| Description | The Tampering detector analyzes |
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video image to determine the nature of its change |
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Name of detection tool analysis
| Analysis result| Type of analysis | Description |
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| Blurred image analysis | The detector generates an event when image borders aren't clear. For example, the detector can generate an event when the image is blurred because of a dirty lens | | Compression artifacts analysis | The |
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detection triggers | detector generates an event when compression artifacts appear |
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on Quality degradation detection triggers when the video image received from a video camera loses qualitydetector generates an event when noise appears in the image. For example, |
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the detection tool may trigger upon excessive light, loss of focus, lens blocking, or sudden drop in scene illuminationthe detector can generate an event when the bitrate is low or the image is rippled (snow) | | Quality degradation analysis | The detector generates an event when there is a degradation in the quality of the image received from the camera. For example, the detector can generate an event when there is lens flare, severe defocusing, when camera lens closes, or when there is an abrupt decrease in image lighting |
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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) detection triggers | detector generates an event when the background of the |
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video | image changes, indicating a change in the position of the |
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video 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
