ocl_prefilter_norm  856 modules/calib3d/src/stereobm.cpp         if(!ocl_prefilter_norm( left0, left, state->preFilterSize, state->preFilterCap))
ocl_prefilter_norm  858 modules/calib3d/src/stereobm.cpp         if(!ocl_prefilter_norm( right0, right, state->preFilterSize, state->preFilterCap))