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| author | Jingning Han <jingning@google.com> | 2013-02-16 14:08:36 -0800 |
|---|---|---|
| committer | Jingning Han <jingning@google.com> | 2013-02-19 09:07:00 -0800 |
| commit | cd907b160133296b74c249537fc636e7462d21d2 (patch) | |
| tree | ca294231841a9a8f5769434809face262f6c17f1 /test/encode_test_driver.h | |
| parent | ae81d3a03f03b46329104c52cb5173b103b1e489 (diff) | |
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16x16 butterfly inverse ADST/DCT hybrid transform
rebased.
This patch includes 16x16 butterfly inverse ADST/DCT hybrid
transform. It uses the variant ADST of kernel
sin((2k+1)*(2n+1)/4N),
which allows a butterfly implementation.
The coding gains as compared to DCT 16x16 are about 0.1% for
both derf and std-hd. It is noteworthy that for std-hd sets
many sequences gains about 0.5%, some 0.2%. There are also few
points that provides -1% to -3% performance. Hence the average
goes to about 0.1%.
Change-Id: Ie80ac84cf403390f6e5d282caa58723739e5ec17
Diffstat (limited to 'test/encode_test_driver.h')
0 files changed, 0 insertions, 0 deletions