Re: Accessibilty module for colorblind people

[David Bolter <david bolter utoronto ca>]

Possibly some related resources:

Color deficiency simulator:
http://www.visibone.com/colorblind/

another simulator:
http://www.vischeck.com/

Color perception paper:
http://www.4colorvision.com/files/colorcontrperf.htm#equations

Color tool:
http://www.colorfield.com/index.html

Example color contrast ratios:
http://juicystudio.com/services/coloursaferatio.php

Color blindness theory:
http://steve.hollasch.net/cgindex/color/color-blind.html

Study showing accessibility barriers:
(see Table 5 - all groups, except completly blind, identified poor color 
contrast as a problem.)
http://www.drc-gb.org/PDF/2.pdf

Study showing algorithm can predict which colors people find readable:
http://www.aprompt.ca/WebPageColors.html

Color FAQ:
http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html


enjoy at will,

David



Bill Haneman wrote:
> Hi Henrik:
>
> <"What he said" >
>
> You and Carlos put this very well.  I agree with you both that this 
> sounds like a great thing to add to gnome-mag.
>
> By the way, Carlos has recently done some very nice work to enable 
> fullscreen magnification without requiring two X screens, so based on 
> this new work (still in bugzilla, but soon to be in cvs we hope), this 
> could be done pretty elegantly at "1:1" without noticeably changing the 
> user experience.
>
> Best regards
>
> Bill
>
> p.s. - gnome-mag magnifies at '1x' if you run it with "-z1".  To use 
> this in fullscreen mode without changing your Xorg.conf will require 
> Carlos' patch to http://bugzilla.gnome.org/show_bug.cgi?id=348375.
>
>
> Henrik Nilsen Omma wrote:
>   
> > Daniel Ruoso wrote:
> >   
> >     
> > > > I think that these filters could be implemented easily in gnome-mag.
> > > > Probably Bill and Willie can give more advices about it.
> > > >     
> > > >       
> > > >         
> > > The question is that colorblindness filters aren't exactly related to
> > > screen magnifier. I'm colorblind, but I don't need a screen magnifier.
> > >   
> > >     
> > >       
> > Perhaps not in your case, but there is a lot of potential overlap. 
> > gnome-mag manipulates the screen image real time (and has a simple 
> > inverse mode) which the filters also do. I'm sure gnome-mag could be set 
> > to 'magnify' at 1x.
> >
> > Some people would want to use both magnification and a filter. Separate 
> > implementations may still be the best option for technical reasons or to 
> > have simpler configuration of each. But in that case they should at 
> > least work well together.
> >
> > Henrik
> > _______________________________________________
> > gnome-accessibility-list mailing list
> > gnome-accessibility-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gnome-accessibility-list
> >   
> >     
>
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