The drawback of denoising a still images sequence is that you will denoise only in the spatial domain, not temporal nor spatio-temporal (the latest being the most effective for video --> motion compensated denoising).
----- Mail Original ----- De: "E Chalaron" <e.chala...@xtra.co.nz> À: cinelerra@skolelinux.no Envoyé: Vendredi 8 Avril 2011 02h26:43 GMT +01:00 Amsterdam / Berlin / Berne / Rome / Stockholm / Vienne Objet: Re: [CinCV] Denoisers Ok ... will stick to imagemagick then since I work on RGB or sequence of TIFF files of film frames. Denoising needs to be done before color correction and since I have either 8 or 16 bits TIFF files, I might as well use what all the data before reducing to the YUV colorspace Cheers E On 04/08/2011 07:06 AM, julien.cyno...@free.fr wrote: > Question 2 : > - yuv4mpegpipe is a YUV-only output format. > - I strongly doubt that hqdn3d is able to process RGB data. I didn't find any > clear information about that for ffmpeg, but avisynth's port of hdqn3d > processes only YUV video (http://akuvian.org/src/avisynth/hqdn3d/hqdn3d.txt). > - the only filters I know that are able to denoise RGB video are working with > avisynth (see http://www.aquilinestudios.org/avsfilters/spatiotemp.html) > - but, in the last command you provide as an example, you finally end up with > YUV-family video (dnxhd), so is there really much point in denoising RGB ? > > Question 1 : > I compared different denoisers, only in the YUV colorspace family. The best > (but slower) ones work inside avisynth : > speed<---------------------> quality > hqdn3d< fft3dfilter< mctemporaldenoise > MCTemporalDenoise( preset="Medium" ) does some king of magic on noisy sources. > > You can input cinelerra-rendered mov video into avisynth with the QTSource > external filter. > Since I work almost only with YUV-video, I usually render from cinelerra > using the "YUV4MPEG Stream" option, piping this stream to mencoder to produce > ffvhuff in an avi container, and then I process this avi inside avisynth. > > D _______________________________________________ Cinelerra mailing list Cinelerra@skolelinux.no https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra _______________________________________________ Cinelerra mailing list Cinelerra@skolelinux.no https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
