computePredecessorMatrix  542 modules/calib3d/src/circlesgrid.cpp void computePredecessorMatrix(const Mat &dm, int verticesCount, Mat &predecessorMatrix);
computePredecessorMatrix 1258 modules/calib3d/src/circlesgrid.cpp     computePredecessorMatrix(distanceMatrix, (int)g.getVerticesCount(), predecessorMatrix);