calcChessboardCorners   61 samples/cpp/3calibration.cpp     calcChessboardCorners(boardSize, squareSize, objpt[0]);
calcChessboardCorners  152 samples/cpp/calibration.cpp     calcChessboardCorners(boardSize, squareSize, objectPoints[0], patternType);
calcChessboardCorners  521 samples/cpp/select3dobj.cpp     calcChessboardCorners(boardSize, (float)squareSize, boardPoints);