Vivotek CC9380-HV, Руководство пользователя

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User's Manual - 71
X ROI_0 X ROI_0
Foreground
background
You can manually specify the video quality for the foreground and the background areas.
Select an operation mode if Smart stream is preferred.
-
Auto tracking : The Auto tracking mode configures the whole screen into the background
area. The video quality of part of the screen returns to normal when one or more
objects move in that particular area. The remainder of the screen where there are
no moving objects (no pixel changes) will still be transmitted in low-quality format.
- Manual : The Manual mode allows you to configure 3 ROI windows (the Foreground
areas) on the screen. Areas not included in any ROI windows will be considered as
the Background areas. The details in the ROI areas will always be transmitted in a
higher-quality video format.
As illustrated below, the upper screen may contain little details of your interest,
while the sidewalk on the lower screen is included in an ROI window.
• Smart codec: Smart codec effectively reduces the quality of the whole or the non-
interested areas on a screen and therefore reduces the bandwidth consumed.