split和merge函数

源代码：

#include<iostream>
#include<opencv2/opencv.hpp>
#include<opencv2/highgui.hpp>

using namespace std;
using namespace cv;

int main(int argc, char** argv[])
{
    Mat img;
    Mat img_meg;
    vector<Mat>split_;
    img = imread("E:\Test\c3.jpg");
    if (!img.data) { cout <<" error" << endl; }
    split(img,split_);        
    imshow("B",    split_[0]);    
    imshow("G", split_[1]);
    imshow("R", split_[2]);
    merge(split_, img_meg);
    imshow("",img_meg);
    waitKey(0);
    return 0;
}