tree 4a0c6b29da045e7527f5477f36219ba3d8334dd5
parent 192bcd3efca9b37ab419ab5faec7409e4bf71b9b
author Yunqing Wang <yunqingwang@google.com> 1544551738 -0800
committer Yunqing Wang <yunqingwang@google.com> 1545071436 +0000

Adaptively choose block sizes in temporal filtering

Use variable block sizes in temporal filtering. Based on prediction
errors of 32x32 or 16x16 blocks, choose the block size adaptively.
This improves the coding performance, especially for HD resolutions.

Speed 1 borg test result:
        avg_psnr:  ovr_psnr:    ssim:
lowres: -0.105     -0.098       -0.045
midres: -0.126     -0.139       -0.123
hdres:  -0.395     -0.403       -0.461

STATS_CHANGED

Change-Id: I20bb33a991a7863c34e3e8c2d74da4715babd416