mergeC3           116 modules/cudev/include/opencv2/cudev/grid/detail/split_merge.hpp         mergeC3<<<grid, block, 0, stream>>>(src1, src2, src3, dst, mask, rows, cols);
mergeC3           171 modules/cudev/include/opencv2/cudev/grid/detail/split_merge.hpp             mergeC3<Policy>(get<0>(src), get<1>(src), get<2>(src), dst, mask, rows, cols, stream);