Opencv图像的读取

#include <opencv2/opencv.hpp>  
using namespace cv;
int main()
{
Mat dst;
Mat pic = imread("2.png");//图像的读取存放
namedWindow("picture");//建显示窗口
imshow("picture", pic);
resize(pic, dst, Size(pic.cols/4, pic.rows/4), 0, 0, INTER_LINEAR);//把原图缩小1/4倍
namedWindow("scale_picture");
imshow("scale_picture", dst);
waitKey(0);//输出页面保持的时间
return 0;
}