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Re: [video-codec] NHW: a wavelet image codec

"Timothy B. Terriberry" <tterribe@xiph.org> Wed, 12 August 2015 18:24 UTC

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Date: Wed, 12 Aug 2015 11:23:05 -0700
From: "Timothy B. Terriberry" <tterribe@xiph.org>
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To: Raphael Canut <nhwcodec@gmail.com>, video-codec@ietf.org
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Subject: Re: [video-codec] NHW: a wavelet image codec
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Raphael Canut wrote:
> If some parts could be selected for test in the NETVC project, would be
> just great.The main interesting parts are: a new fast wavelet transform,
> a multistage residual coding, and 3 new entropy coding schemes, which
> one is very efficient and very fast for quantized coefficients in
> video/image compression.

Thanks for the contribution. There are several ways to go from here.

One thing that would be interesting to know would be the performance 
compared to Daala and Thor. I would suggest working with Thomas Daede 
<daede003@umn.edu> to make that happen.

Another thing would be to try to integrate pieces of the other 
submissions into your codec or pieces of your codec into the other 
submissions, to see if you can demonstrate improvements. Some examples 
of how we have been doing this for Daala and Thor are here:

https://review.xiph.org/874/
https://github.com/cisco/thor/pull/8

One potentially interesting area to experiment with might be be the 
prototype screencasting experiments in Daala presented at IETF 93: 
https://tools.ietf.org/html/draft-valin-netvc-l1tw-01

Those are using wavelets, so they might benefit from some of what you 
are doing.

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