Consolidated list of denoisers and denoiser comparisons

[hkazemi]

Denoiser Comparisons
Here is a list of denoiser information, with links to the full details. Be sure to search the forums on any filter that interests you to get a better feeling for its strengths, weaknesses, and caveats. The 'best' or strongest filters may not be appropriate for content that is already 'clean', but could still be useful in making it easier to reach a particular filesize or bitrate target.

What denoiser is the worst? Objective test attempt (Fizick) (from August 2006)
http://forum.doom9.org/showthread.php?t=114582#post861726

What denoiser is the worst? Objective test attempt (tritical) (some noise) (from August 2006)
http://forum.doom9.org/showthread.php?t=114582#post861869
summary, sorted by SSIM: dfttest+emc > fft3dfilter+emc > dfttest+imc >> sw-3ddct > dfttest > fft3dfilter >> tnlmeans > frfun7 > frfun3d > dctfun4b
note : "emc = external motion compenstation, imc = internal motion compensation... external as in a separate filter and internal as in part of the filter itself."
graph : http://bengal.missouri.edu/~kes25c/denoise_graph.png

What denoiser is the worst? Objective test attempt (tritical) (flower clip) (extra noise) (from August 2006)
http://forum.doom9.org/showthread.php?t=114582&page=3#post866255
summary, sorted by SSIM: dfttest+emc > fft3dfilter+emc > sw-3ddct > dfttest > fft3dfilter >> frfun7 > frfun3d > dctfun4b
graph : http://bengal.missouri.edu/~kes25c/denoise_graph2.png
visual : http://bengal.missouri.edu/~kes25c/frame21.png

What denoiser is the worst? Objective test attempt (Soulhunter) (flower clip) (some and extra noise) (from August 2006)
http://forum.doom9.org/showthread.php?t=114582&page=3#post867344
summary, sorted by SSIM (for some noise): MC.DCTFun7 > dfttest+emc > MC.fft3dfilter
summary, sorted by SSIM (for extra noise): MC.DCTFun7 > dfttest+emc > MC.fft3dfilter
MC/emc=motion compensated.
DCTFun7 is not publicly available as of this posting.

N_F's Speed and compression of different denoisers (from April 2003)
http://forum.doom9.org/showthread.php?t=51181#post296354

Wilbert's speed tests (from Nov 2003)
http://forum.doom9.org/showthread.php?t=51181&page=4#post394004

SILICON's speed and compression gain tests (from April 2004)
http://forum.doom9.org/showthread.php?t=51181&page=4#post478854

Your_Idol's Compression and quality of different filters.doc (from Sept 2006) has subjective comments on the filters he tested and compression comparisons.
summary, sorted by compression gain: fft3dfilter >> Deen > GrapeSmoother > TemporalSoften > Unfilter > Temporalcleaner > FluxSmoothST > Convolution3D("movieHQ") > Convolution3D
http://forum.doom9.org/showthread.php?t=51181&page=6#post874926
http://forum.doom9.org/attachment.php?attachmentid=6144&d=1158116153

Compressibilty issue (with Test Results) (from March 2008)
summary, sorted by compression gain: dfttest > HybridFuPP > fft3dfilter > Tweak > DCTFilter > No filter
http://forum.doom9.org/showthread.php?t=136363


Techniques
Anime and Cartoons:
Restoring low-quality Youtube/similar videos
Dark Shikari's script using both dfttest and fft3dgpu, based on a script by mikeytown2
http://forum.doom9.org/showthread.php?t=134078

Anime/Cartoon Noise Removal & Resolution Boost (mikeytown2's script)
http://forum.doom9.org/showthread.php?t=132240

animemusicvideos.org's guide to Improving Visual Quality and Compressibility for Internet Encoding
http://www.animemusicvideos.org/guides/avtech/avspostqual.html
animemusicvideos.org's guide to Improving Visual Quality and Compressibility for Internet Encoding (updated manual, beta release)
http://www.animemusicvideos.org/guides/avtechbeta/avspostqual.html

Sources:
Consolidated list of test video clip resources (including the flower clip mentioned above)
http://forum.doom9.org/showthread.php?t=135034

dfttest by tritical
http://web.missouri.edu/~kes25c/

fft3dfilter by Fizick
http://avisynth.org.ru/fft3dfilter/fft3dfilter.html

fft3dgpu by tsp based on Fizick's fft3dfilter, is a version that offloads processing to recent nVidia and ATI graphics card GPUs. tsp's fft3dGPU v0.8.2 is based on Fizick's fft3dfilter v1.8.5
http://forum.doom9.org/showthread.php?t=89941
http://avisynth.org/tsp/

[hkazemi]

reserved post for extended followup

[Adub]

Speaking of which, does anyone know the status of DCTFun7? It was reference almost two years ago, and still hasn't shown up.
MF, Foxyshadis, Tritical, Fizick? Anyone?

[Fizick]

It is a myth recorded by ancient author known as "Soulhunter"
:)

[Adub]

I thought so, but that "myth" had PSNR results.

[Soulhunter]

It is a myth recorded by ancient author known as "Soulhunter"
:)
Just stumbled over this thread... "ancient author" lol! Now you made me feel old! :p

Well, its true that DCTFun7 was never officially released, but this was true for DFTTest as well, for a long time... Thing is, the slight PSNR improvement didn't justify its lower speed (compared to the other DCTFun versions). So, same as DCTFun 1, 2, 3, and 6 it was never officially released!


Bye