| Description | The Tampering Detection 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 detection tool generates an event when image borders aren't clear. For example, the detection tool can generate an event when the image is blurred because of a dirty lens | | Compression artifacts analysis | The detection |
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triggers | tool generates an event when compression artifacts appear |
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on Quality degradation | Image noise analysis | The detection |
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triggers when the video image received from a video camera loses qualitytool generates an event when noise appears in the image. For example, the detection tool |
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may trigger upon excessive light, loss of focus, lens blocking, or sudden drop in scene illuminationcan generate an event when the bitrate is low, or the image is rippled (snow) | | Quality degradation |
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Image noise triggers when video noise appears on the imagetool generates an event when there is a degradation in the quality of the image received from the camera. For example, the detection tool |
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may trigger upon low bit rate or ripples in the image (snow)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 | | Scene change analysis | The detection |
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triggers | tool 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
