split函数的主要功能是把一个彩色图像分割成3个通道,方便进一步的图像处理,具体说明如下:
split Divides a multi-channel array into several single-channel arrays.
C++: void split(const Mat& mtx, Mat* mv)
C++: void split(const Mat& mtx, vector<Mat>& mv)
其实还有一个函数merge可以实现相反的操作,简单说明如下:
merge Composes a multi-channel array from several single-channel arrays.
C++: void merge(const Mat* mv, size_t count, OutputArray dst)
C++: void merge(const vector<Mat>& mv, OutputArray dst)
其示例代码如下:
#include "stdafx.h"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/highgui/highgui.hpp"
#include <iostream>
#include <vector>
using namespace cv;
int main( int argc, char** argv )
{
Mat src, srcOfMerge;
vector<Mat> mv;
/// Read image ( same size, same type )
src = imread("d