opencv读取、显示、保存图像

  

   

    

     

    
    

     

      #include <cv.h>
     
    
   

    

     

    
    

     

      #include <highgui.h>
     
    
   

    

     

    
    

     

      using namespace cv;
     
    
   

    

     

    
    

     

      int main( int argc, char** argv )
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
 if(argc != 2)
     
    
   

    

     

    
    

     

       {
     
    
   

    

     

    
    

     
   printf("useage: %s <imagefile>\n ", argv[0]);
     
    
   

    

     

    
    

     
   return -1;
     
    
   

    

     

    
    

     

       }
     
    
   

    

     

    
    

     
 char* imageName = argv[1];
     
    
   

    

     

    
    

     

       Mat image;
     
    
   

    

     

    
    

     

       image = imread( imageName, CV_LOAD_IMAGE_COLOR);
     
    
   

    

     

    
    

     
 if( !image.data )
     
    
   

    

     

    
    

     

       {
     
    
   

    

     

    
    

     
   printf( " No image data \n " );
     
    
   

    

     

    
    

     
   return -1;
     
    
   

    

     

    
    

     

       }
     
    
   

    

     

    
    

     

       Mat gray_image;
     
    
   

    

     

    
    

     

       cvtColor( image, gray_image, CV_BGR2GRAY );
     
    
   

    

     

    
    

     

       imwrite( "../../images/Gray_Image.jpg", gray_image );
     
    
   

    

     

    
    

     

       <cv.h>
     
    
   

    

     

    
    

     

      #include <highgui.h>
     
    
   

    

     

    
    

     

      using namespace cv;
     
    
   

    

     

    
    

     

      int main( int argc, char** argv )
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
 if(argc != 2)
     
    
   

    

     

    
    

     

       {
     
    
   

    

     

    
    

     
   printf("useage: %s <imagefile>\n ", argv[0]);
     
    
   

    

     

    
    

     
   return -1;
     
    
   

    

     

    
    

     

       }
     
    
   

    

     

    
    

     
 char* imageName = argv[1];
     
    
   

    

     

    
    

     

       Mat image;
     
    
   

    

     

    
    

     

       image = imread( imageName, CV_LOAD_IMAGE_COLOR);
     
    
   

    

     

    
    

     
 if( !image.data )
     
    
   

    

     

    
    

     

       {
     
    
   

    

     

    
    

     
   printf( " No image data \n " );
     
    
   

    

     

    
    

     
   return -1;
     
    
   

    

     

    
    

     

       }
     
    
   

    

     

    
    

     

       Mat gray_image;
     
    
   

    

     

    
    

     

       cvtColor( image, gray_image, CV_BGR2GRAY );
     
    
   

    

     

    
    

     

       imwrite( "../../images/Gray_Image.jpg", gray_image );
     
    
   

    

     

    
    

     

      // cvSaveImage(ImagesName, betterI);//参数是IplImage*
     
    
   

    

     

    
    

     

       cvSaveImage(ImagesName, betterI);//参数是IplImage*
     
    
   

    

     

    
    

     

       namedWindow( imageName, CV_WINDOW_AUTOSIZE ); namedWindow( "Gray image", CV_WINDOW_AUTOSIZE ); imshow( imageName, image ); imshow( "Gray image", gray_image ); waitKey(0); return 0;}
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      说明：
     
    
   

    

     

    
    

     

      cvSaveImage(ImagesName, betterI);//参数是IplImage*
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      两种读取图片方式都可以：
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

       Mat imgMat = imread("20160802.jpeg");//const String* filename);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 if(imgMat.empty())return -1; //是否加载成功
     
    
   

    

     

    
    

     
   if(!imgMat.data)return -1;//判断是否有数据
     
    
   

    

     

    
    

     

         IplImage pImg= IplImage(imgMat);
     
    
   

    

     

    
    

     

       IplImage *pImg = cvLoadImage("20160802.jpeg");
     
    
   

    

     

    
    

     

       IplImage *tImg =Rotate(pImg);
     
    
   

    

     

    
    

     

      // IplImage* img = cvCreateImage(cvGetSize(mat),8,1);
     
    
   

    

     

    
    

     

      // cvGetImage(matI,img);
     
    
   

    

     

    
    

     

         cvSaveImage("rice1.png",tImg);
     
    
   

    

     

    
    

     

      Mat imgMat = imread("20160802.jpeg");//const String* filename);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 if(imgMat.empty())return -1; //是否加载成功
     
    
   

    

     

    
    

     
   if(!imgMat.data)return -1;//判断是否有数据
     
    
   

    

     

    
    

     

         IplImage pImg= IplImage(imgMat);
     
    
   

    

     

    
    

     

       IplImage *pImg = cvLoadImage("20160802.jpeg");
     
    
   

    

     

    
    

     

       IplImage *tImg =Rotate(pImg);
     
    
   

    

     

    
    

     

      // IplImage* img = cvCreateImage(cvGetSize(mat),8,1);
     
    
   

    

     

    
    

     

      // cvGetImage(matI,img);
     
    
   

    

     

    
    

     

         cvSaveImage("rice1.png",tImg);
     
    
  
 

文章来源: blog.csdn.net，作者：网奇，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/jacke121/article/details/54718295