Hi Timothy, Many thanks for your answer.
2015-08-12 20:23 GMT+02:00 Timothy B. Terriberry <[email protected]>: > > 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 < > [email protected]> to make that happen. > > That's a good idea, but keep in mind that the NHW codec is optimized for neatness (and sharpness), so results for PSNR and SSIM are not good (there are more "errors").For now, the best way I have found to evaluate the NHW codec is to visually evaluate it.... It is also now optimized for mid/normal compression, there are no high compression settings... It's still experimental! > 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 > > We can try first with the entropy coding for the wavelet coefficients.I would be really interested in trying Daala's arithmetic coder. 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. > I have read the draft, in my codec I am using 5/3 (and 9/7) wavelets.I have read that you are using tree coding like SPIHT and EZW.I would be interested in understanding more and trying this technique. Many thanks. Cheers, Raphael
_______________________________________________ video-codec mailing list [email protected] https://www.ietf.org/mailman/listinfo/video-codec
