prepareCameraMatrix 3222 modules/calib3d/src/calibration.cpp     cameraMatrix = prepareCameraMatrix(cameraMatrix, rtype);
prepareCameraMatrix 3296 modules/calib3d/src/calibration.cpp     cameraMatrix1 = prepareCameraMatrix(cameraMatrix1, rtype);
prepareCameraMatrix 3297 modules/calib3d/src/calibration.cpp     cameraMatrix2 = prepareCameraMatrix(cameraMatrix2, rtype);