Forums > Digital Art and Retouching > Color Deconvolution

Photographer

NothingIsRealButTheGirl

Posts: 35726

Los Angeles, California, US

I mentioned in another thread that I use Focus Magic all the time. While searching to see to what extent deconvolution was already built in to Photoshop CS5 (smart sharpen?) I came across this interesting site:

Forensic Photoshop

and this idea in particular:

Prosecuting Graffiti Taggers using Color Deconvolution.

use this url:
http://www.4N6Site.com

Jun 10 10 11:20 am Link

Photographer

Sean Baker Photo

Posts: 8044

San Antonio, Texas, US

The site is so-so, but I do really love that plugin.  It's not as useful as I'd have hoped due to limitations of the implementation, but you can't beat the price smile.

[And fwiw, for better or worse, Smart Sharpen isn't a deconvolution-based method hmm.]

Jun 10 10 12:59 pm Link

Photographer

NothingIsRealButTheGirl

Posts: 35726

Los Angeles, California, US

SRB Photo wrote:
[And fwiw, for better or worse, Smart Sharpen isn't a deconvolution-based method hmm.]

thought it might be, but I never touch Photoshop sharpening

Jun 10 10 01:01 pm Link

Photographer

NothingIsRealButTheGirl

Posts: 35726

Los Angeles, California, US

The examples for retouching

http://home.planet.nl/~ber03728/4N6site … amples.htm
way at the bottom

are pretty interesting.

Jun 10 10 01:06 pm Link

Photographer

Sean Baker Photo

Posts: 8044

San Antonio, Texas, US

NothingIsRealButTheGirl wrote:

thought it might be, but I never touch Photoshop sharpening

Chris Cox has mentioned a few times trying to get such a technique into a release, but there just hasn't been enough community demand to outweigh other 'must-have' features.

It appears to actually just be a harder-edged kernel than the gaussian of USM.  But because PS's gaussian isn't a real gaussian, the SS kernel seems to be very slow in comparison.

Jun 10 10 01:07 pm Link

Photographer

NothingIsRealButTheGirl

Posts: 35726

Los Angeles, California, US

http://www.4N6Site.com

If this thing can discriminate so well between two shades of ballpoint pen I wonder how it would be for pulling masks from hair.

Of course hair can have a lot of different hues, but I'm curious to play with this.

Jun 10 10 01:16 pm Link

Photographer

WMcK

Posts: 5298

Glasgow, Scotland, United Kingdom

I have downloaded the color deconvolution plug in (paid version) more out of interest than for any practical use, but may try it on hair to see what kind of a mask it can create.

Jun 11 10 01:40 am Link

Photographer

NothingIsRealButTheGirl

Posts: 35726

Los Angeles, California, US

WMcK wrote:
I have downloaded the color deconvolution plug in (paid version) more out of interest than for any practical use, but may try it on hair to see what kind of a mask it can create.

Same here.

https://www.digitalartform.com/assets/colorDecon01.jpg

I think it's quite promising.

http://www.digitalartform.com/archives/ … nvolu.html

Jun 12 10 12:53 pm Link

Photographer

NothingIsRealButTheGirl

Posts: 35726

Los Angeles, California, US

I sort of lost track of this plugin over the last 2 years, but by coincidence the guy maintaining the site that offers it wrote me today to tell me to update some links.

Thought it might be worth another look.

http://www.4N6Site.com

Jul 04 12 12:50 pm Link