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| author | Yaowu Xu <yaowu@google.com> | 2012-01-26 14:36:20 -0800 |
|---|---|---|
| committer | Yaowu Xu <yaowu@google.com> | 2012-01-26 14:50:11 -0800 |
| commit | 81d16e3f530705a8bfc5712734af3b289bf72150 (patch) | |
| tree | 4ac73ea23a9234087f83c6fc0e575662ef548bd9 /solution.mk | |
| parent | aebb16bfa81e57b6db35c2b709f863f1ae105f85 (diff) | |
| download | libvpx-81d16e3f530705a8bfc5712734af3b289bf72150.tar libvpx-81d16e3f530705a8bfc5712734af3b289bf72150.tar.gz libvpx-81d16e3f530705a8bfc5712734af3b289bf72150.tar.bz2 libvpx-81d16e3f530705a8bfc5712734af3b289bf72150.zip | |
fixed an issue with 8x8 token cost in trellisquant
changed the token cost for 8x8 transformed macroblock used in trellisquant
from those derived from 4x4 transform coefficient distribution to those
derived from 8x8 transform coefficient distribution. Test results show
this fix help 8x8 transform based compression consistently on cif and hd
sets:
http://www.corp.google.com/~yaowu/no_crawl/t8x8/cif_cost8x8only.html
(avg psnr:.14% glb psnr: .17% ssim: .20%)
http://www.corp.google.com/~yaowu/no_crawl/t8x8/hd_cost8x8only.html
(avg psnr:.17% glb psnr: .18% ssim: .58%)
Note: To test the effect of this change, 8x8 transform was forced to be used
only on 16x16 predicted macroblocks on inter frames, the effect would be
bigger had all macroblocks been forcd to use 8x8 transform.
Change-Id: If9b7868b75357c66541f511e5ee78e4d2d4929a4
Diffstat (limited to 'solution.mk')
0 files changed, 0 insertions, 0 deletions