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| author | Jingning Han <jingning@google.com> | 2018-10-29 14:08:20 -0700 |
|---|---|---|
| committer | Jingning Han <jingning@google.com> | 2018-10-29 16:50:32 -0700 |
| commit | 50a90744407be7b88c47737d1bba79e7ffb5c2d3 (patch) | |
| tree | bb3154484347baed3dc62ccf5cda353bb0ab0702 /rate_hist.c | |
| parent | f2c039115d8c63e19a8f5fab765360f0be672d41 (diff) | |
| download | libvpx-50a90744407be7b88c47737d1bba79e7ffb5c2d3.tar libvpx-50a90744407be7b88c47737d1bba79e7ffb5c2d3.tar.gz libvpx-50a90744407be7b88c47737d1bba79e7ffb5c2d3.tar.bz2 libvpx-50a90744407be7b88c47737d1bba79e7ffb5c2d3.zip | |
Properly space qp in q mode for multi-layer ARF
Space the quantization parameter distribution according to the
layer depth for multi-layer ARF coding structure. This allows
lower layers to have relatively smaller quantization parameters
than higher layers. It improves the compression performance
in constant q mode for multi-layer ARF system:
avg PSNR overall PSNR SSIM
lowres -0.33% -0.31% -1.44%
midres -0.29% -0.38% -1.14%
hdres -0.27% -0.49% -1.02%
Change-Id: I9cfe2f27e6c0029c30614970a46de3045840264e
Diffstat (limited to 'rate_hist.c')
0 files changed, 0 insertions, 0 deletions