ImageGear for C and C++ on Windows v20.3 - Updated
Area Detection and Processing
User Guide > How to Work with ... > Image Processing and Cleanup > Area Detection and Processing

Area detection functions allow you to detect an area in the image, using a predefined or custom pixel checking method.

See also the Red-Eye Removal group.

IG_IP_detect_area() Detects an area of pixels using a user-defined pixel checker.
IG_IP_detect_area_with_threshold() Detects an area of pixels using a specified threshold.
IG_IP_process_area Processes all pixels in the ROI area using a specified pixel processor.

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