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Anonymous
Sup guys. Not sure whether to put this in /r/ or here, but ill try here first.
Whats the best way to 'denoise' a scan, besides getting a friggin expensive scanner? i got a few nice posters i want to scan, but whenever i scan em i get well, noise.
so answers pls!
>> MDG
noise ninja is quite good
some photoshop filters work wonder , too (<3 surface blur)
others use greycstoration or neat image
>> Anonymous
     File :-(, x)
>>129503
cheers. will look into those. any peepz got any more opinions on aforementioned question?
>> Anonymous
>>129510
well for best quality, you could vector trace the image :]

although this doesnt work with every image and is time consuming as hell...
>> Chains
This question. It is relevant to my interests.

It's mostly for one specific image that would be near impossible to vector (a picture of a subway at night). The original image was scanned from a magazine and was really tiny, so trying to reduce noise/general suckage of the picture quality has been a nightmare.

I just downloaded noise ninja, and I'm gonna try it out tonight. I might try your other suggestions later, too, MDG. Thanks. Can't find surface blur on my PS though, blarg.
>> MDG
>>129518
well i think surface blur works best with anime material, since animes tend to have huge areas of the same color...

however removing much noise always blurrs the pic...
you could up your pic, maybe we have other experts lurking here who could make a testrun with their settings...
>> Anonymous
Got CS2? There's a filter for 'Reduce Noise'. Couple that with an Unsharp Mask, about 83%, and 1-3 px. Works well
>> Megadeus
I've used both Noise Ninja and Neat Image. Neat Image definitely has the better noise removal engine and has many more adjustable parameters but it's sample selector is not as good as Noise Ninja. Whereas Noise Ninja allows multiple selections of any size for sampling, Neat Image only let's you select one sample spot and it requires such a large selection before it even enables the analyze button, that sometimes it can be difficult to find a large enough area without important image details that could throw off the profiling accuracy. Still, in most cases Neat Image seems to reduce noise better, with less blurring than Noise Ninja.

Also from my test, greycstoration is soooo sloooow on high resolution images, but seems to work well in some cases. If you have a hr image, cut out a small piece for adjusting the settings and, once you got all the setting fine-tuned, let it chew on the original, full-size image overnight.
>> Anonymous
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I tried scanning my first anime-pic, however I wonder if theres a "resolution-restriction" !?
As in : Can a B6 scan look good in 1200dpi (~ 7k*12k)
Or should I scan at 600dpi and then resize to something like 1,5k * 2,5k max ?

See pic for main problem...
>> Anonymous
This has come up before; the simple solution, which can work quite well, is to make a new layer over the original, blur it, and then change the layer overlay type to "color value" or whatever. It's quick and reasonably effective.
>> Anonymous
>>129986
helped a bit thx