MESSAGE_MATRIX_DIFF  335 modules/calib3d/test/test_homography.cpp                             CV_Error(CALIB3D_HOMOGRAPHY_ERROR_MATRIX_DIFF, MESSAGE_MATRIX_DIFF);
MESSAGE_MATRIX_DIFF  366 modules/calib3d/test/test_homography.cpp                             CV_Error(CALIB3D_HOMOGRAPHY_ERROR_MATRIX_DIFF, MESSAGE_MATRIX_DIFF);