tree 1924a13b1223f8cdc3e5a3655a086e5d7bbbca7a
parent c54836b2c0c45d09fd54a46d592bacb4e7ae728e
author Cheng Chen <chengchen@google.com> 1556823576 -0700
committer Cheng Chen <chengchen@google.com> 1560898795 +0000

Implement new non-local means algorithm.

Apply the new non-local means filtering for 480p and above.

An experiment flag is set for easy maintainance and modification.

The most recent performance tests on 60 frames show:

Vbr midres: avg_psnr	ovr_psnr	 ssim           vmaf
Spd0	    -0.133	-0.280		-0.144		-0.218
Spd1	    -0.236	-0.377		-0.245		-0.440
Spd2	    -0.273	-0.415		-0.299		-0.436

Vbr hdres:  avg_psnr	ovr_psnr	 ssim		vmaf
Spd0	    -0.235	-0.445		-0.302		-0.768
Spd1	    -0.347	-0.565		-0.437		-0.870
Spd2	    -0.416	-0.630		-0.488		-0.827

q midres:   avg_psnr	ovr_psnr	 ssim		vmaf
Spd0	    -0.077	-0.197		-0.118		-0.253
Spd1	    -0.084	-0.196		-0.141		-0.262
Spd2	    -0.107	-0.224		-0.107		-0.188

q hdres:    avg_psnr	ovr_psnr	 ssim		vmaf
Spd0	     0.107	-0.092		-0.123		-0.878
Spd1	     0.003	-0.198		-0.219		-1.003
Spd2	    -0.015	-0.216		-0.187		-0.901

Test head is 23bc1ee51f81334fef4189d1c6e3156a36407b5c.

STATS_CHANGED

Change-Id: Ia8cd2e31d75a3cfcef607f454ee873d812bde323