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As the result, the lower screen is constantly displayed in high details, while the
upper half (non-ROI) is transmitted using a lower-quality format. Although the
upper half is transmitted using a lower quality format, you still have an awareness
of what is happening on the whole screen.
- Hybrid: The major difference between the "Manual" mode and the "Hybrid" mode is
that:
In the "Hybrid" mode, any objects entering the non-interested area will restore
the video quality of the moving objects and the area around them. The video
quality of the associated non-interested area is immediately restored to normal
to cover the moving objects.
In the "Manual" mode, the non-interested area is always transmitted using a
low-quality format regardless of the activities inside.
- Quality priority: Use the slide bar to tune the quality contrast between the ROI and
non-interested areas.
The farther the slide bar button is to the right, the higher the image quality of
the ROI areas. On the contrary, the farther the slide bar button to the left, the
higher the image quality of the non-interested area.
In this way, you may set up an ROI window as a privacy mask by covering a
protected area using an ROI window, while the remaining screen become the
non-interested area. You may then configure the non-interested area to have a
high image quality, or vice versa.
You should also select the Maximum bit rate from the pull-down menu as the threshold
to contain the bandwidth consumption for both the high- and low-quality video sections
in a smart stream.
non-ROI:
lower-quality
ROI:
higher-quality
VIVOTEK
User's Manual - 63
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