[OpenCV] 1、读取图片

 1 #include <stdio.h>
 2 #include <opencv2/opencv.hpp>
 3 using namespace std;
 4 using namespace cv;
 5 int main(int argc, char* argv[])
 6 {
 7     const char* imagename = "lena.jpg";
 8     Mat img = imread(imagename);
 9     if(img.empty())
10     {
11         fprintf(stderr, "Can not load image %s\n", imagename);
12         return -1;
13     }
14     imshow("image", img);
15     waitKey();
16     return 0;
17 }