Chen-tao / webm

Automatically exported from code.google.com/p/webm
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Denoiser quality #485

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago
On a sample video clip, see: 
/home/marpan/clips_denoise/tacaoma_small_camera_movement.yuv

the decoded video (at 500kbps, 30fps) with denoiser on seems to look worse than 
with denoiser off.

Parameters for encoding/decoding (2 temporal layers were used):

 ./vpxenc --lag-in-frames=0 --error-resilient=1 --target-bitrate=500 --kf-min-dist=3000 --kf-max-dist=3000 --cpu-used=-6 --fps=30000/1000 --static-thresh=1 --token-parts=1 --drop-frame=0 --end-usage=cbr --min-q=2 --max-q=56 --undershoot-pct=100 --overshoot-pct=15 --buf-sz=1000 --buf-initial-sz=500 --buf-optimal-sz=600 --max-intra-rate=900 --resize-allowed=0 --drop-frame=0 --passes=1 --rt --noise-sensitivity=1 --tune=psnr -w $w -h $h input.yuv -o out.webm &>vpx.log

./vpxdec out.webm --i420 --deblock --demacroblock-level=3 --mfqe -o out.yuv 
&>vpxdec.log

Original issue reported on code.google.com by marpan@google.com on 20 Sep 2012 at 10:35

GoogleCodeExporter commented 9 years ago

Original comment by marpan@google.com on 8 Oct 2012 at 4:06

GoogleCodeExporter commented 9 years ago

Original comment by albe...@google.com on 11 Oct 2012 at 10:05

GoogleCodeExporter commented 9 years ago
This clip has camera shaking. Some artifacts from denoising (i.e, on skin 
areas) also exist in some other clips (see issue 487) with stable camera.

Original comment by marpan@google.com on 16 Oct 2012 at 6:39

GoogleCodeExporter commented 9 years ago
Improvement for this issue has been found and merged in libvpx:
https://gerrit.chromium.org/gerrit/#/c/39297/

Original comment by marpan@google.com on 7 Dec 2012 at 6:11

GoogleCodeExporter commented 9 years ago

Original comment by marpan@google.com on 10 Dec 2012 at 4:15