RETR_TREE          81 samples/cpp/contours2.cpp     findContours( img, contours0, hierarchy, RETR_TREE, CHAIN_APPROX_SIMPLE);
RETR_TREE          66 samples/cpp/tutorial_code/ShapeDescriptors/findContours_demo.cpp   findContours( canny_output, contours, hierarchy, RETR_TREE, CHAIN_APPROX_SIMPLE, Point(0, 0) );
RETR_TREE          61 samples/cpp/tutorial_code/ShapeDescriptors/generalContours_demo1.cpp   findContours( threshold_output, contours, hierarchy, RETR_TREE, CHAIN_APPROX_SIMPLE, Point(0, 0) );
RETR_TREE          61 samples/cpp/tutorial_code/ShapeDescriptors/generalContours_demo2.cpp   findContours( threshold_output, contours, hierarchy, RETR_TREE, CHAIN_APPROX_SIMPLE, Point(0, 0) );
RETR_TREE          63 samples/cpp/tutorial_code/ShapeDescriptors/hull_demo.cpp   findContours( threshold_output, contours, hierarchy, RETR_TREE, CHAIN_APPROX_SIMPLE, Point(0, 0) );
RETR_TREE          61 samples/cpp/tutorial_code/ShapeDescriptors/moments_demo.cpp   findContours( canny_output, contours, hierarchy, RETR_TREE, CHAIN_APPROX_SIMPLE, Point(0, 0) );
RETR_TREE          43 samples/cpp/tutorial_code/ShapeDescriptors/pointPolygonTest_demo.cpp   findContours( src_copy, contours, hierarchy, RETR_TREE, CHAIN_APPROX_SIMPLE);