[FFmpeg-devel] Another possible block-matching metric?

Nico Sabbi Nicola.Sabbi
Tue Aug 21 09:41:32 CEST 2007

Jason Garrett-Glaser wrote:

>This should be relatively easy to implement.
>I have been toying with x264 lately and found that SSIM can do a
>pretty good job as a block-matching metric if scaled appropriately.
>(1/(1-SSIM))*16000 seems to do pretty well, and gives similar results
>to SATD (Hadamard) in terms of PSNR and SSIM in the resulting encode
>and in some cases outperforms SATD by a small bit.  Adding SSIM as a
>block-matching metric to FFMPEG would be a nice encoding option;
>perhaps it will be just as effective for MPEG-2 and MPEG-4 ASP as it
>is for MPEG-4 AVC.  And since there's already assembly for it, it
>shouldn't need much coding at all.
you forgot to attach the patch

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