isfree            937 modules/imgproc/include/opencv2/imgproc.hpp         bool isfree() const;
isfree            948 modules/imgproc/include/opencv2/imgproc.hpp         bool isfree() const;
isfree            586 modules/imgproc/src/subdivision2d.cpp         if( quadedge.isfree() )
isfree            715 modules/imgproc/src/subdivision2d.cpp         if( qedges[i].isfree() )
isfree            770 modules/imgproc/src/subdivision2d.cpp         if( vtx[k].isfree() || vtx[k].isvirtual() )
isfree            797 modules/imgproc/src/subdivision2d.cpp         if( qe.isfree() )