opencv图像的读入与输出（c++）

#include 
#include 

using namespace std;
using namespace cv;

int main(int argc, const char** argv)
{
	Mat src = imread("E:/picture/9.jpg");
	if (src.empty())
	{
		cout << "could not find picture" << endl;
		return -1;
	}
	imshow("input", src);
	waitKey(0);
	destroyAllWindows();
	return 0;
}