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int main( int argc, char** argv )
{
   namedWindow( window_name, CV_WINDOW_AUTOSIZE );

   /// ÔØÈëԭͼÏñ
   src = imread( "D://Qtimage//bh.jpg", 1 );

   if( display_caption( "Original Image" ) != 0 ) { return 0; }
   dst = src.clone();
   if( display_dst( DELAY_CAPTION ) != 0 ) { return 0; }

     waitKey(0);
     return 0;
}




int display_caption( char* caption )
{
   dst = Mat::zeros( src.size(), src.type() );
   putText( dst, caption,
            Point( src.cols/4, src.rows/2),
            CV_FONT_HERSHEY_COMPLEX, 1, Scalar(255, 255, 255) );

   imshow( window_name, dst );
   int c = waitKey( DELAY_CAPTION );
   if( c >= 0 ) { return -1; }
   return 0;
  }

  int display_dst( int delay )
  {
    imshow( window_name, dst );
    int c = waitKey ( delay );
    if( c >= 0 ) { return -1; }
    return 0;
  }


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