ICRealtime HDAVS Series, Руководство пользователя

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5.3.4 Contrast
It is used to adjust the image contrast. Users can adjust the value when the overall image
brightness is appropriate but the contrast is not enough.
The bigger the value is, the more obvious the contrast becomes. The dark area of the image
becomes too dark and the bright area tends to be overexposed when the value is set too high;
the image becomes foggy when the value is set too low. The range is between 0 and 15.
5.3.5 Saturation
It is used to adjust the color purity. The threshold won’t cause any effect to the overall
brightness of the image.
The bigger the value is, the higher the purity becomes and more flamboyant the color becomes.
The image color becomes too strong when the value is set too big; the image color is not
flamboyant enough when the value is set too small. The range is between 0 and 15.
5.3.6 Sharpness Suppression
It is used to suppress image sharpness during high gain, it will cause no influence to low gain
effect when modifying the value.
The bigger the value is, the more obvious it becomes for high gain sharpness suppression,
and it is blurrier for object edge. The range is between 0 and 15.
5.3.7 Chroma Suppression
It is used to suppress image saturation during high gain.
The bigger the value is, the more obvious it becomes for chroma suppression effect during
high gain, and the image color is more likely to tend to be black and white. The range is
between 0 and 15.
5.3.8 Gamma
It is used to optimize brightness and contrast and implement subtle adjustment of bright and
dark layer.
The image becomes foggier and brighter when the value gets bigger; the image becomes
sharper and darker when the value gets smaller. The range is between 0 and 15.
5.3.9 2DNR
It is used to reduce the image noise.
The bigger the value is, the smaller the noise becomes. The range is between 0 and 15.
5.3.10 3DNR
It is used to reduce image noise in low illuminance environment.
Compared to general 2DNR, 3DNR not only realizes noise reduction for brightness and
saturation of the video separation signal but also for the original data generated by sensor,