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.