cdiff             430 modules/imgproc/src/segmentation.cpp                     mask[j*2 - 1] = cdiff(-3) || cdiff(3) || cdiff(-dstep-3) || cdiff(-dstep) ||
cdiff             431 modules/imgproc/src/segmentation.cpp                         cdiff(-dstep+3) || cdiff(dstep-3) || cdiff(dstep) || cdiff(dstep+3);