ScanImageAndReduceIterator 26 samples/cpp/tutorial_code/core/how_to_scan_images/how_to_scan_images.cpp Mat& ScanImageAndReduceIterator(Mat& I, const uchar* table); ScanImageAndReduceIterator 88 samples/cpp/tutorial_code/core/how_to_scan_images/how_to_scan_images.cpp J = ScanImageAndReduceIterator(clone_i, table);