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

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     waitKey(0);
     return 0;
}




int display_caption( char* caption )
{
   dst = Mat::zeros( src.size(), src.type() );
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   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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