"hello,world"lena

1.安装opencv,添加bin到系统环境变量,重启之后生效

2.在vs中任意创建控制台应用程序工程,添加依赖库文件

3.添加包含目录和库目录

cv: hello world

#include "opencv2/opencv.hpp"

using namespace cv;

int main(void)

{　char *fn = "D:\opencv\sources\samples\data\lena.jpg";

    Mat image = imread(fn);

    imshow("Hello,world!",image);

    waitkey(0);

}