OpenCv图像通道分离 合并

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <opencv2\opencv.hpp>
using namespace std;
using namespace cv;
int main()
{
    Mat img = imread("E:/test/MySource/OpenCV/1.jpg");
	Mat dst;
	vector<Mat> channels;//定义Mat类型的向量

	split(img, channels);//通道分离
	Mat blue = channels.at(0);
	Mat green = channels.at(1);
	Mat red = channels.at(2);

	threshold(blue, blue, 150, 255, THRESH_BINARY);//二值化：大于200的赋值255  小于200的赋值0
	threshold(green, green, 150, 255, THRESH_BINARY);
	threshold(red, red, 150, 255, THRESH_BINARY);

	merge(channels, dst);//通道合并

	imshow("原图", img);
	imshow("blue", blue);
	imshow("green", green);
	imshow("red", red);
	imshow("dst", dst);

	waitKey(0);
    //std::cout << "Hello World!\n"; 
}