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| author | Deb Mukherjee <debargha@google.com> | 2012-12-11 17:06:35 -0800 |
|---|---|---|
| committer | Deb Mukherjee <debargha@google.com> | 2012-12-13 10:37:49 -0800 |
| commit | 210dc5b2db5de75b6cdd97e0bf79e7fb2bc11cba (patch) | |
| tree | 6ec760c7598e99d449fcb1eb87161e6dd4dce726 /vp9/common/vp9_context.c | |
| parent | f09c4cde85f8f2cc5e263e77f68625cfaf12f552 (diff) | |
| download | libvpx-210dc5b2db5de75b6cdd97e0bf79e7fb2bc11cba.tar libvpx-210dc5b2db5de75b6cdd97e0bf79e7fb2bc11cba.tar.gz libvpx-210dc5b2db5de75b6cdd97e0bf79e7fb2bc11cba.tar.bz2 libvpx-210dc5b2db5de75b6cdd97e0bf79e7fb2bc11cba.zip | |
Further improvements on the hybrid dwt/dct expt
Modifies the scanning pattern and uses a floating point 16x16
dct implementation for now to handle scaling better.
Also experiments are in progress with 2/6 and 9/7 wavelets.
Results have improved to within ~0.25% of 32x32 dct for std-hd
and about 0.03% for derf. This difference can probably be bridged by
re-optimizing the entropy stats for these transforms. Currently
the stats used are common between 32x32 dct and dwt/dct.
Experiments are in progress with various scan pattern - wavelet
combinations.
Ideally the subbands should be tokenized separately, and an
experiment will be condcuted next on that.
Change-Id: Ia9cbfc2d63cb7a47e562b2cd9341caf962bcc110
Diffstat (limited to 'vp9/common/vp9_context.c')
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