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| author | Yaowu Xu <yaowu@google.com> | 2012-02-28 14:19:38 -0800 |
|---|---|---|
| committer | Yaowu Xu <yaowu@google.com> | 2012-02-28 17:17:47 -0800 |
| commit | af5c774b5c8a4cdf6d6792e63ce09d2702909de5 (patch) | |
| tree | fa7252a725854524a11c8dad77f7533d131bff2e /all_builds.py | |
| parent | dc825f1e2b9885acec0d725d43cb471a31ec2e4f (diff) | |
| download | libvpx-af5c774b5c8a4cdf6d6792e63ce09d2702909de5.tar libvpx-af5c774b5c8a4cdf6d6792e63ce09d2702909de5.tar.gz libvpx-af5c774b5c8a4cdf6d6792e63ce09d2702909de5.tar.bz2 libvpx-af5c774b5c8a4cdf6d6792e63ce09d2702909de5.zip | |
Correct zbinboost lookup for 8x8 quantizer
The commit fixed a problem where 8x8 regular quantizer was using the
4x4 zbinboost lookup table that only has 16 entries at each Q. The
commit assigned a uniform zbin boost value for all cases that there
are more than 16 consective zeros. The change only affects MBs using
8x8 transform. The fix has a slightly positive impact on quality.
Test results:
http://www.corp.google.com/~yaowu/no_crawl/hd_fixzbinb.html
(avg psnr: .26% glb psnr: .21% ssim: .28%)
Results on cif size clip are also positive even though gain is smaller
http://www.corp.google.com/~yaowu/no_crawl/derf_fixzbinb.html
Change-Id: Ibe8f6da181d1fb377fbd0d3b5feb15be0cfa2017
Diffstat (limited to 'all_builds.py')
0 files changed, 0 insertions, 0 deletions