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

The detector generates an event when noise appears in the image.

For example, the detector can generate an event when the bitrate is low or the image is rippled (snow)

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