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    • Laurent Aimar's avatar
      * all: Change the way PSNR is computed (based on a patch by Loren · 11e1b0c2
      Laurent Aimar authored
      Merritt <lorenmn AT u DOT washington DOT edu>
       Using SQE(DeltaSourceReconstructed) = Sum( delta^2 )
             PSNR( SQE, Size ) = -10Ln(SQE / 255^2 / Size )/Ln(10) )
             Y+U+V : Union of YUV planes.
      
       Now there is 
        - Mean PSNR : Sum( PSNR( SQE(Y/U/V), Size(Y/U/V) ) / TotalFrames
        - Average PSNR: Sum( PSNR( SQE(Y+U+V), Size(Y+U+V) ) ) / TotalFrames
        - Global PSNR: PSNR( Sum( SQE(Y+U+V) ), Size(Y+U+V)*TotalFrames )
      
        Mean PSNR is used by the JM, and Average/Overall is used on Doom9 for
      example.
      
      
      
      git-svn-id: svn://svn.videolan.org/x264/trunk@19 df754926-b1dd-0310-bc7b-ec298dee348c
      11e1b0c2
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