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As the result, the lower screen is constantly displayed in high details,
while the upper half 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 - 75
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