| commit | d0dd01b8ce8bc5f477d70f1c127d795418c5efb5 | [log] [tgz] |
|---|---|---|
| author | Yaowu Xu <yaowu@google.com> | Wed Jun 16 12:52:18 2010 -0700 |
| committer | Yaowu Xu <yaowu@google.com> | Thu Jun 24 13:17:58 2010 -0700 |
| tree | 335898f9122085c141c49d44182b52f580100bc9 | |
| parent | a5906668a32c46a0f033b3a503ac5a159b77fce3 [diff] |
Redo the forward 4x4 dct The new fdct lowers the round trip sum squared error for a 4x4 block ~0.12. or ~0.008/pixel. For reference, the old matrix multiply version has average round trip error 1.46 for a 4x4 block. Thanks to "derf" for his suggestions and references. Change-Id: I5559d1e81d333b319404ab16b336b739f87afc79