opencv GRB三通道颜色分离

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

using namespace std;
using namespace cv;

int showPicture()
{
	Mat img = imread("pic.jpg");
	if (img.empty())
	{
		cout << "opencv image failed!" << endl;
		return -1;
	}

	cout << "rows:" << img.rows << ", cols:" << img.cols << endl;

	cv::imshow("Picture", img);

	waitKey(10000);

	Mat channels[3];
	split(img, channels);

	imshow("B", channels[0]);
	imshow("G", channels[1]);
	imshow("R", channels[2]);

	imwrite("channelB.jpg", channels[0]);
	imwrite("channelG.jpg", channels[1]);
	imwrite("channelR.jpg", channels[2]);

	waitKey(0);

	return 0;
}

int showVideo()
{
	return 0;
}

int main()
{
	showPicture();

	return 0;
}

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