mergeC2            85 modules/cudev/include/opencv2/cudev/grid/detail/split_merge.hpp         mergeC2<<<grid, block, 0, stream>>>(src1, src2, dst, mask, rows, cols);
mergeC2           162 modules/cudev/include/opencv2/cudev/grid/detail/split_merge.hpp             mergeC2<Policy>(get<0>(src), get<1>(src), dst, mask, rows, cols, stream);