opencv（9）输入，简单处理，保存

#include <opencv2/core/core.hpp> 
#include <opencv2/highgui/highgui.hpp> 

using namespace cv; //包含cv命名空间

int main()
{
  //图像载入和显示
  Mat School = imread("LYU.jpg");
  namedWindow("羲之湖", 0);
  cvResizeWindow("羲之湖", 640, 480);
  imshow("羲之湖", School);

  //初级图像混合
  Mat image = imread("LYU.jpg");
  Mat logo = imread("11.png");
  namedWindow("1", 0);
  cvResizeWindow("1", 640, 480);
  imshow("1", image);
  namedWindow("2", 0);
  cvResizeWindow("2", 50, 50);
  imshow("2", logo);
  //定义一个Mat类型用于存放图像的roi
  Mat imageROI;
  imageROI = image(Rect(600, 500, logo.cols, logo.rows));
  //融合
  addWeighted(imageROI, 0.7, logo, 0.7, 0., imageROI);
  //显示结果
  namedWindow("融合", 0);
  cvResizeWindow("融合", 640, 480);
  imshow("融合", image);
  //图片保存
  imwrite("22.jpg", image);
  waitKey();
  return 0;
}