opencv学习记录01：加载、修改、保存图片imread\cvtColor\imwrite

点：
imread
cvtColor
imwrite
opencv 颜色空间转换函数cvtColor()运用
https://zouzhongliang.com/index.php/2019/08/19/opencv-yansekongjianzhuanhuanhanshucvtcoloryunyong/
代码：

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

using namespace std;
using namespace cv;

int main(int argc, char** argv) {
	Mat src;
	src = imread("F:\\opencv_work\\02加载修改保存图片\\27.jpg");
//	if (src.empty())
//{
//	cout << "can not find image" << endl;
//	return -1;
//}
	namedWindow("总舵主的自画像", WINDOW_AUTOSIZE);
	imshow("总舵主的自画像", src);
	
	Mat src1;
	cvtColor(src, src1, COLOR_BGR2GRAY);
	imshow("总舵主的美图像", src1);

	imwrite("27—1.jpg", src);

	waitKey(0);
	return 0;
}

运行结果：