I'll just add a +1 to the recommendation for Neat Video. It works better than any deniose / degrain tool I've ever used!!
Neat Video - best noise reduction for digital video Rich Rich Bobo Senior VFX Compositor Armstrong-White http://armstrong-white.com/ Email: [email protected] Mobile: (248) 840-2665 Web: http://richbobo.com/ "First say to yourself what you would be; and then do what you have to do." - Epictetus (55-135 AD) Roman Philosopher On Nov 8, 2012, at 9:04 AM, Julik Tarkhanov <[email protected]> wrote: > If you need to patch stuff the best approach is to projection-stabilize a > number of frames onto a texture or a card or what have you, render this out > as a UV map or a static perspective camera, and to average some frames. > You use the FrameBlend node for this, always set it to custom range. I start > with 5 frames always and go up if the shot is underexposed since grain/noise > will be more prominent. At some point all of the grain and most of the noise > should disappear with no loss in sharpness. An additional benefit is that you > will be able to actually see what your lens and stock are doing to your > sharpness and the highlights in terms of softening, which is a great study by > itself. > > This operation gives you a plate you can paint on. Once done, output this > plate through your matchmove/reproject pipe (this will introduce a little > softening, nothing to do about that) with a matte. Then apply regrain through > that alpha. Personally, I found Nuke's Grain node only suitable for film > grain. If you want it cooler/snappier/more advanced/fit for digital noise as > well use F_ReGrain, it's a great, proven tool. I tried to use SampledGrain or > whatever it's called > but never succeeded. > > If you have footage that cannot be reprojected or tracked for this workflow > you will pretty much have to use NeatVideo or similar denoisers, which will > soften the image one way or another. Another option for those fellows in the > Baselight > bay would be to give you 4K scans so that you have more sampling room, at > least for those specific frames you are using for reprojection +- some head > and tail. > > On 8 nov. 2012, at 09:33, adam jones <[email protected]> wrote: > >> So I guess I am asking if anyone has any techniques or tips (different >> de_grain approach) with the tools at hand. > > -- > Julik Tarkhanov | HecticElectric | Keizersgracht 736 1017 EX > Amsterdam | The Netherlands | tel. +31 20 330 8250 > cel. +31 61 145 06 36 | http://hecticelectric.nl > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
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