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Software Photoshop, Lightroom, Paintshop Pro, Painter, etc., and all their various plugins. Of course, you can also discuss all other programs, as well.

PC/Win Filter: High Pass Lum

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  #11  
Old 09-07-2005, 12:55 AM
Craig Walters's Avatar
Craig Walters Craig Walters is offline
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a half pixel? didnt know that was possible. i can understand doubling the image size and getting more intermediate pixels, but didnt know you could paint half a pixel.

ok, still lost on the frequencies definition. are you talking luminosity values only here?

mezzo. ok.

you definitely have a different way of looking at things, stroker (i think that's a good thing)

Craig
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  #12  
Old 09-07-2005, 09:36 AM
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Stroker Stroker is offline
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Yup, sub-pixel can be done. If you have a filter that does custom convolution kernels, you can use it to shift/offset by a fraction of a pixel.

The frequencies that I'm operating on in Lum Frequencies is indeed Luminosity. Hence, the name. Normally frequencies are thought of as 1d, as in a sound wave on a silly-scope. But, like many things 1d, can be made 2d and higher.

Here is a link that talks about frequency:
http://freespace.virgin.net/hugo.eli...s/m_perlin.htm

I also highly recommend looking for Peter Hajba's article and reading it several times.

I do have a strange head. It's something I'm known for in certain circles. Too bad my idiocy over-shadows my genius a little too often. Mixed blessing.

edit:
More junk done. See the node.

Almost time to crawl back under my rock.

Last edited by Stroker; 09-07-2005 at 08:24 PM.
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  #13  
Old 09-08-2005, 03:53 PM
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Craig Walters Craig Walters is offline
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stroker,

well, we've been here before with your plugins. i start asking questions and you point me to something where i fall asleep so, i'm leaving it here. i did have a look around at perlin's site. that guy is a genius.

as for 1d vs. 2d. i remember an old science class where the teacher was showing us something on a chalk board and asking about how many dimensions it had. he was looking for 2 and i pointed out it had 3. that even though the chalk seemed pretty flat, it still had some depth. this was about 7th or 8th grade. he was duly impressed that i saw that. but, that's about as far as i go. an oscilliscope is generally considered a 2d representation. adding a third dimension, depth, would be almost meaningless, unless you assigned it a value of something and made it sort of an arbitrary value at that. so, i dont see how taking the lum values and adding another dimension helps at all. i dont mean that as a criticism, oh poo poo, but rather that i just dont understand.

but, i am using the plugin! and i do like it. i just tweak it till i get something i like. i dont really understand all that i'm tweaking, but i like the results so, thanks!

Quote:
Too bad my idiocy over-shadows my genius a little too often.
so, an idiot-savante?

Craig
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  #14  
Old 09-13-2005, 01:19 PM
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Stroker Stroker is offline
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Yup yup.

More junk done. Final form for now. See node if ya got the yarbles for it.

Time to disappear for awhile.
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  #15  
Old 05-20-2010, 05:39 AM
zajac4 zajac4 is offline
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Re: PC/Win Filter: High Pass Lum

I'm use the LUM filter for Dra-gan Effect
http://www.zajac4.xnet.com.pl/dragan-mz.jpg
In Luminosity channel (in LAB) use the LUM, after use Dodge&Burn technique.
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