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17
Parameter Description
Iris
You can set the camera luminous flux. The larger the Iris value, the brighter the
image.
Exposure
Compensation
You can set the exposure compensation value. The value ranges from 0 to 100.
The higher the value is, the brighter the image will be.
Exposure
adjustment
speed
You can set the exposure adjustment speed. The value ranges from 0 to 100.
Upper gain
threshold
You can set the upper gain threshold of exposure. The value ranges from 0 to
100.
Low-speed
shutter
In a low luminance environment, snapping images by expending the automatic
exposure time effectively reduces image noise, but images of moving objects
may be blurred.
Lower
threshold of
low-speed
shutter
You can set the lower threshold of the camera low-speed shutter. The lower the
value, the faster the shutter.
AE Recovery
Automatic exposure is an automated digital camera system that adjusts the
aperture and/or shutter speed, based on the external lighting conditions for
images and videos. If you have selected an
AE Recovery
time, the exposure
mode will be restored to the previous mode after you adjust the Iris value.
There are five options: Off, 5 min, 15 min, 1 hour, and 2 hour.
2D NR
Average the pixel of a single frame image with other pixels to reduce image
noise. The higher the level is, the lower the noise will be, and images appear to
be blurrier.
3D NR
Reduce the noise of multiple-frame (at least two frames) images by using inter-
frame information between two adjacent frames in a video. The higher the level
is, the lower the noise will be, and the larger the trailing smear will be.
Level
Noise reduction grade. The value ranges from 0 to 100. The larger the value is,
the less the noise will be.
Advanced NR
You can suppress noise in the time-domain
and space-domain based on the video filter
method.
Some models do not
support advanced noise
reduction, time domain
grade, or space domain
grade.
Time domain
grade
You can set the time domain grade. The value
ranges from 0 to 100.
Space domain
grade
You can set the space domain grade. The
value ranges from 0 to 100.
Step 3 Click
Apply
.
4.3.1.5 Backlight
You can select backlight mode from BLC, WDR and HLS
Step 1 Click on the upper-right corner of the page, and then select
Camera
>
Image
>
Backlight
.
Step 2 Select the camera that needs to be configured from the
Channel
drop-down list and then
select a backlight mode from the list.
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