cvSub            1123 modules/calib3d/src/calibration.cpp         cvSub(_err, _m, _err);
cvSub            1499 modules/calib3d/src/calibration.cpp             cvSub( &_mp, &_mi, &_mp );
cvSub            1969 modules/calib3d/src/calibration.cpp                 cvSub( &tmpimagePoints, &imgpt_i[k], &tmpimagePoints );
cvSub            1058 modules/core/include/opencv2/core/core_c.h CVAPI(void)  cvSub( const CvArr* src1, const CvArr* src2, CvArr* dst,
cvSub             778 modules/photo/src/inpaint.cpp     cvSub(band,mask,band,NULL);
cvSub             792 modules/photo/src/inpaint.cpp         cvSub(out,mask,out,NULL);
cvSub             798 modules/photo/src/inpaint.cpp         cvSub(out,band,out,NULL);