CCTV Camera Pros Geovision 8.5 Multicam Digital Surveillance System - Manual (Page 193)

Video Analysis
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3.11 Scene Change Detection
The Scene Change Detection can detect when a camera has been tampered physically. This feature
can generate an alert whenever someone or something has covered the lens of the camera, or when
the camera has been moved, or when it is out of focus.
1. Click the Configure button (No. 14, Figure 1-2), select Video Analysis, and select Scene
Change Detection Setting. The Scene Change Detection Setup dialog box appears.
2. Select the desired cameras to be configured, and then click the Configure tab. This dialog box
appears.
Figure 3-39 Scene Change Detection Setup
„ Camera: Select the camera to be configured.
„ Mask region: Masks off the areas where motion will be ignored.
„ Focus change: Generates an alert when the camera is out of focus.
„ View change: Generates an alert when the camera has been moved, or the lens of the
camera has been covered.
„ Sensitivity: Adjusts detection sensitivity. The default value is 3.