During the recent debate on the new icon theme I brought the question of testing your work against known vision defects like red/green color blindness, blurry vision and such things. However it does not seem that we have an easy to use tool to simulate all these various issues, therefore I would like to propose that we work on building one. I would be willing to dust off my coding skills and give this a shot however I need some help figuring out the math behind the various defects. The rough idea would be to feed the program an image, say a screenshot of the Fedora desktop we are working on and the program would output images showing us how this would look to the affected people. Akin to what vischeck[1] does but locally and using free software. I figure starting with deuteranomaly as the proof of concept it would be good as that covers about 6% of the male population and is the single most common color vision defect according to my research. Ensuring that Fedora can be used by 6% of the male population out of the box would probably be worth a little bit of work. I have been able to dig up all kinds of genetic details as to how this works but not a single reference to an algorithm we could apply to the transform operation. So dear lazyweb, help me dig up the math and I will see what I can do about providing a tool for the real artists to play with. That is if there's an real interest of course. - David Also a fun project for someone with interest, there are means of calculating backwards[2] to make interfaces that do hit a certain vision impairments work for these people. It properly requires more math that what is feasable but never the less I could see someone having a bit of fun with realtime color transformation like that. A nice thesis subject for some starving CS student maybe, I'd be happy to help out. I'm thinking a Compiz plugin that adjusts the colors might do the trick. [1] http://www.vischeck.com/vischeck/ [2] http://www.vischeck.com/daltonize/ _______________________________________________ @xxxxxxxxxx http://www.redhat.com/mailman/listinfo/
