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Manual - Surveillance System, Security Cameras, and CCTV ...

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172<br />

3.8 Face Count<br />

The Face Count function allows you to count the number of faces that appear in the image. You can<br />

also select to invoke a computer alarm or trigger an output device when a face is detected or when the<br />

system is unable to detect a face.<br />

The number of faces counted is saved to the GV-Web Report, <strong>and</strong> the GV-Web Report can analyze<br />

counting data from multiple GV-<strong>System</strong>s. For details, see GV-Web Report User’s <strong>Manual</strong>.<br />

Note: This function is only available when an AVP dongle is used. Up to 16 cameras can be<br />

configured for this function.<br />

3.8.1 Installing the Camera<br />

1. Install the camera inside an entrance pointing horizontally outward. The Face Count function is<br />

designed to detect front-view faces only, <strong>and</strong> the area of the detected face must take up 10% to<br />

50% of the live image.<br />

Figure 3-29<br />

2. Avoid installing the camera where it can be subjected to direct sunlight or reflections. The lighting<br />

of the entrance where you set the camera should be sufficient but not be too bright or dark. Light<br />

should be distributed evenly across faces without too much light coming from one side. If sharp<br />

shadow edges are visible in the camera view, the count accuracy might be less than what it<br />

normally is.

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