8.Features
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 161
Sharpness adjustment
Adjust the sharpness value can adjust the camera's sharpness to the image. The adjustment range is 0-
7.0. The larger the value, the higher the sharpness.
Sharpness noise suppression threshold adjustment
Adjust the sharpness noise suppression threshold can reduce the noise of homogeneous area. It is
suitable for noise caused by high intensity sharpness. The adjustment range is 0-1. The larger the value,
the higher the noise suppression.
Figure 8-74 After sharpness noise suppression
8.4.7.
Flat Field Correction
During the use of the camera, there may be various inconsistencies in the image, which are mainly
reflected in the following aspects:
1)
Inconsistent response of individual pixels.
2)
The difference in gray value between the image center and the edge.
3)
Non-uniform illumination.
The Flat Field Correction (FFC) feature can correct the inconsistency of the image. As shown below, the
FFC can adjust the pixel values of different positions to the same gray value.
Figure 8-75 Before FFC
Figure 8-76 After FFC