跟我学算法-opencv加载，修改，保存

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

using namespace cv;
int main(int argc, char** argv) {
    Mat src = imread("C:/Users/Administrator/Desktop/1.png", IMREAD_ANYCOLOR);
    if (src.empty()) {
        printf("colud not load image\n");
        return -;
    }
    namedWindow("test open setup", CV_WINDOW_AUTOSIZE);
//第一个参数表示窗口的名字, src表示数据
    imshow("test open setup", src); 

    namedWindow("output windows", CV_WINDOW_AUTOSIZE);
    Mat output_show;
    cvtColor(src, output_show, CV_BGR2HLS);
    imshow("output windows", output_show);

    imwrite("C:/Users/Administrator/Desktop/2.png", output_show);
    waitKey();
    return ;
}