RGB filters for different forms of color blindness

Question

My father is color blind and given that I work in games where the visuals are important, I\'ve always wanted to write a filter for screen shots (or even some type of shader) tha

Answer 1

I came across Color Oracle and thought it might help. Here is the short description:

Color Oracle is a colorblindness simulator for Windows, Mac and Linux. It takes the guesswork out of designing for color blindness by showing you in real time what people with common color vision impairments will see.

Answer 2

If you have Chrome, you can use Google's color enhancer extension, but I don't see anything like this for Ubuntu in general.

Answer 3

The colorjack link has good info, but I use http://colorfilter.wickline.org/. It can check a whole page: images, CSS colors and all.

Answer 4

The GIMP has a colorblindness filter in View -> Display Filters -> Color Deficient Vision

Answer 5

My Google search came up with this one, which appears to be exactly what you're looking for. Eight different versions of color blindness are simulated by multiplying each of the R,G,B values by 3 different percentages and adding them together.

http://www.colorjack.com/labs/colormatrix/ (dead link)

Working Archived Link (working link)

Answer 6

Google came up with a number of links, perhaps one provides source or algorithm descriptions: http://www.google.com/search?hl=en&q=simulating+color+blindness&aq=f&oq=

Edit: Thanks Torlack for pointing out that everybody knows about Google. But using Google effectively requires using the proper search terms, and good search terms aren't always obvious. Judging by the returned page titles and a couple of the links, this particular search seemed highly relevant. I don't think it was a bad enough answer for a downvote.