OpenCV学习笔记_—— mixChannel（）

最新推荐文章于 2025-02-05 21:50:27 发布

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最新推荐文章于 2025-02-05 21:50:27 发布

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分类专栏： OpenCV C++

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本文详细介绍了OpenCV中的mixChannels函数，该函数用于将输入矩阵的指定通道拆分并复制到输出矩阵的相应通道中。通过fromTo参数，可以自定义输入和输出通道的对应关系。确保输入和输出矩阵具有相同大小和深度，并预先分配输出矩阵的空间。函数操作包括单个或多个矩阵的通道复用，对于多输入多输出矩阵，正确设定fromTo参数以实现通道的精确映射至关重要。

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CV_EXPORTS void mixChannels(const Mat* src, size_t nsrcs, Mat* dst, size_t ndsts,
                            const int* fromTo, size_t npairs);

/** @overload
@param src input array or vector of matrices; all of the matrices must have the same size and the
same depth.
@param dst output array or vector of matrices; all the matrices **must be allocated**; their size and
depth must be the same as in src[0].
@param fromTo array of index pairs specifying which channels are copied and where; fromTo[k\*2] is
a 0-based index of the input channel in src, fromTo[k\*2+1] is an index of the output channel in
dst; the continuous channel numbering is used: the first input image channels are indexed from 0 to
src[0].channels()-1, the second input image channels are indexed from src[0].channels() to
src[0].channels() + src[1].channels()-1, and so on, the same scheme is used for the output image
channels; as a special case, when fromTo[k\*2] is negative, the correspondi