tree 636fe68fc4d784723862e4e84cea06a4132df90d
parent 52c52fcb6e7edeac018000e7c3f30ae8292b69a1
author Cheng Chen <chengchen@google.com> 1603816848 -0700
committer Cheng Chen <chengchen@google.com> 1603942692 +0000

Adjust threshold in palette color cache clustering

Use a higher threshold to bias towards using cached colors.

On speed 0, key frame only, screen content set:
        ovr_psnr    ssim    vmaf_neg
 8-bit    -0.37%    -0.57%    -0.27%
10-bit    -1.18%    -0.97%    -0.65%
12-bit    -0.53%    -0.99%    -0.71%

BUG=aomedia:2847

STATS_CHANGED

Change-Id: Ibc6018ff6a39823547faff8ab6a1625beed9ffbc