Compressibility - Noisefilter

[ArchStanton]

Inspired by this (http://forum.doom9.org/showthread.php?s=&threadid=51181) and partly by this (http://forum.doom9.org/showthread.php?s=&threadid=69236) thread I made a little compressibility test with CCE´s internal noisefilter.

I used CCE-SP 2.66.01.07, the settings are pretty much standard:

OVP Q: 25 Min: 0 Max: 9000
GOP: 3/4
Intra DC: 9
Quantizer: 16
Zigzag
Progressiv

The source is a standard quality progressive DVD(PAL), not much noise either.

The avisynth script is also not very exciting:
ConvertToYUY2()
SelectRangeEvery(600,12)


Filter Strength: Size:
0 68.838
2 65.144
4 63.492
6 62.952
8 62.631
10 62.412
16 62.049
32 61.782
64 61.650


To compare the results i also tested a few avisynth denoisers with the same movie:



Filter Size
convolution3d("moviehq") 63.646
convolution3d("movielq") 61.000
Deen() 52.048
Undot() 66.499
Undot() + CCE Filter strenght 4 61.572
Temporalsoften(2,3,3,mode=2,scenechange=6) 61.452

I did this test mainly because the internal CCE filter is very fast and I was curious how effective it is. I didn´t analyze, due to a lack of time, the visual quality exactly, but I hardly noticed any difference until strength 4 on my monitor.

So I hope somebody finds this little comparison interesting, well at least I did ;)



EDIT: I did a full movie now with CCE noise filter 4 and I must admit the result isn´t very promising, it´s pretty blury.

[jonny]

SelectRangeEvery(600,12)

:goodpost:

Only a little note, next time use a full small clip instead of the SelectRangeEvery (SelectRangeEvery introduce a "jumping" every 12 frames, so the figure is *a little bit* different compared to a real encode)

[ArchStanton]

Yeah, I know, the advantage of selectrangeevery(x,Y) however is, that I can check the compressibility of a whole movie, and not only a small clip, pretty accurately.