对OpenCV中的merge/split函数进行了实现，经测试，与OpenCV3.1结果完全一致。
merge实现代码merge.hpp：
- // fbc_cv是免费软件，并且使用与OpenCV相同的许可证
- #ifndef FBC_CV_MERGE_HPP_
- #define FBC_CV_MERGE_HPP_
- /* reference: include/opencv2/core.hpp
- core/src/convert.cpp
- core/src/merge.cpp
- */
- #include <vector>
- #include "core/mat.hpp"
- #ifndef __cplusplus
- #error merge.hpp header must be compiled as C++
- #endif
- namespace fbc {
- // 合并几个数组以创建单个多通道数组
- template<typename _Tp, int chs1, int chs2>
- int merge(const std::vector<Mat_<_Tp, chs1>>& src, Mat_<_Tp, chs2>& dst)
- {
- FBC_Assert(dst.data != NULL);
- FBC_Assert((src.size() > 0) && (src.size() == dst.channels) && (src.size() <= FBC_CN_MAX));
- int width = src[0].cols;
- int height = src[0].rows;
- FBC_Assert((dst.cols == width) && (dst.rows == height));
- for (int i = 0; i < src.size(); i++) {
- FBC_Assert(src[i].data != NULL);
- FBC_Assert((src[i].cols == width) && src[i].rows == height);
- FBC_Assert(src[i].channels == 1);
- }
- if (src.size() == 1) {
- memcpy(dst.data, src[0].data, dst.step * dst.rows);
- return 0;
- }
- _Tp* pDst = (_Tp*)dst.data;
- int len = width * height;
- int cn = dst.channels;
- for (int i = 0; i < src.size(); i++) {
- _Tp* pSrc = (_Tp*)src[i].data;
- for (int j = 0; j < len; j++) {
- pDst[j * cn + i] = pSrc[j];
- }
- }
- return 0;
- }
- } // 命名空间fbc
- #endif // FBC_CV_MERGE_HPP_
