tree 7d94211bd132df48fb177742f7fa5586116c538b
parent 4d2ca41728c31a062599d56ac3daaef9714c51ef
author Angie Chiang <angiebird@google.com> 1673592494 -0800
committer Angie Chiang <angiebird@google.com> 1674088177 +0000

Improve 1-pass TPL by adjusting propagation ratio

(vmaf score is a bit strange a lot of scores are zeros)
(base_q_ratio is off for simplification)

Against legacy without deltaq
       avg_psnr  ovr_psnr  ssim  vmaf
hd     -3.769   -4.324   -3.702  -1.899
q_mode 80.270   6.949   5.806   230.788

Against legacy with deltaq
       avg_psnr  ovr_psnr  ssim  vmaf
hd     -4.564  -5.129  -3.119  -1.392
q_mode 79.467  8.879   9.515   210.097

Against two-pass without deltaq
       avg_psnr  ovr_psnr  ssim  vmaf
hd     -0.067    0.490     2.345   -0.197
q_mode 70.467  7.331   6.926   84.812

With deltaq against without deltaq
       avg_psnr  ovr_psnr  ssim  vmaf
hd     -0.380    -0.573  0.797   0.185

(Don't have two-pass with deltaq data at the moment)

The performance of hd dataset looks okay.
But for q_mode, it's a lot worse. (Will do some investigation)
Also the deltaq gain is not as significant as 2pass, which also
worth some investigation.

Change-Id: I22d680d71283fbf8e52537bc73b88c767fda0ff5