tree 5f9c86039a342bc97cb4c90341f95762851d067c
parent 4a400ac20dd361b52e3e0637024ec89312e8c36b
author Yunqing Wang <yunqingwang@google.com> 1542763982 -0800
committer Yunqing Wang <yunqingwang@google.com> 1543346540 +0000

Improve temporal filtering

Ported the weight calculation from VP9. Considered U and V pixel values
while calculating Y pixel's filter weights, and vice versa.

Borg test result(speed 1; 150 frames for lowres/midres and 60 frames for
hdres):
       avg_psnr:  ovr_psnr:  ssim:
hdres:  -0.140    -0.187    -0.147
midres: -0.088    -0.084    -0.072
lowres: -0.028    -0.062    -0.117

STATS_CHANGED

Change-Id: I0a3ed6297431fa56d0e672ede809af6d55a5786f