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

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3.13 Video Defogging<br />

Smoky environments <strong>and</strong> bad weather, such as rain, snow or fog, all affect image quality <strong>and</strong> reduce<br />

scene visibility. This feature helps to enhance image quality for live viewing.<br />

Note:<br />

1. This function is only available when an AVP dongle is used.<br />

2. This function takes high CPU <strong>and</strong> memory usage. Make sure at least 1 GB of RAM is installed<br />

on your system.<br />

1. Click the Configure button (No. 14, Figure 1-2), point to Advanced Video Analysis, select Defog<br />

Setting, select up to 4 cameras to be configured, <strong>and</strong> then click the Configure button. This dialog<br />

box appears.<br />

Figure 3-46<br />

2. Use the drop-down list to select one camera, <strong>and</strong> select Enable.<br />

3. Move the slide of Sampling range (20) to decrease the fogginess of the image.<br />

4. Select Colorful mode, <strong>and</strong> move the slide bar of Normalization (40) to adjust the image color.<br />

5. When the image enhancement is enabled, the system load will increase. Adjust the Refresh rate<br />

by moving the slide bar to optimize system performance.<br />

6. If you want to view the demonstration of this function, click the Demo button.<br />

7. Click Schedule to set a schedule to enable the function. For details, see Video Analysis Schedule<br />

later in this chapter<br />

3<br />

Video Analysis<br />

189

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