8.Features
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 157
8.4.
Image Processing
8.4.1.
HDR
HDR stands for “high dynamic range”. For industrial cameras, it means that the camera directly generates
high dynamic range digital images. In contrast, acquiring images using traditional methods is called LDR
(low dynamic range).
The dynamic range of an image (ie, contrast) is the ratio of light to dark. In other words, if the image
contains both brighter and darker areas, the dynamic range is higher (e.g., an image of a person stands
with his back to the sun). If the dynamic range is extremely small, the brightness can also be high because
there is no darker area (e.g., facing the sun).
The HDR mode acquires two images at different exposures.Long-exposure image and short-exposure
image merged into one HDR image. The HDR image retains both dark details in the high-brightness image
and the bright details in the low-brightness image.
Figure 8-27 HDR diagram
Camera model that support this feature:
Model
MER-203-30GC-P-L
MER-203-30GC-P-L-F03
MER-204-30GC-P-L-F02
8.4.2.
Sharpness
The sharpness algorithm integrated in the camera can significantly improve the definition of the edges of
the image. The higher the definition, the clearer the contour corresponding to the image. This feature can
improve the accuracy of image analysis, thus improving the recognition rate of edge detection and OCR.
Enable sharpness
ON means that the sharpness feature is enabled
