- From: Al Gilman <asgilman@iamdigex.net>
- Date: Fri, 06 Oct 2000 10:49:22 -0400
- To: Jon Gunderson <jongund@ux1.cso.uiuc.edu>, <w3c-wai-ua@w3.org>
- Cc: kasday@ACM.org, Bruce_Bailey@ed.gov, chris@w3.org
At 09:09 AM 2000-10-06 -0500, Jon Gunderson wrote: >Al, >The colors user for rendering the graphic is often more important than size >for some people with visual impairments. It depends on what part of the >eye is affected. So we need to include foreground and background color in >the mix for full consideration of accessibility for people with low vision. > Well, this requires a detailed walk through the details, but if the User Agent supports CSS on the mother document, it is supposed to support CSS on the embedded SVG; which, if it all works, should be giving the user foreground/background color control over the drawlines in general. Unless the CSS requirement is only on the text. Have to check. But we may be covered. Al >Jon > > >At 10:24 PM 10/5/2000 -0400, Al Gilman wrote: >>[Len, Bruce: the reference thread is at >> http://lists.w3.org/Archives/Public/w3c-wai-ua/2000OctDec/thread.html#4 ] >> >>According to Bruce Bailey's report >> >> http://lists.w3.org/Archives/Public/w3c-wai-ig/2000OctDec/0012.html >> >>if you can force the text up in size you have solved the P2 problem. Icons >>don't seem to be the same severity of problem. >> >>This would sound as though, modulo a possible P3 gap, you are probably >>covered as is. >> >>I am copying Len and Bruce on this as I feel a bit over my depth. I don't >>have that good a background in low vision. >> >>Al >> >>On second thought that bit about icons is not so strange. Icons are analog >>encoding. This means you would expect them to degrade gradually on >>low-pass filtering where all you get is an outline, more or less. Text >>doesn't look like it sounds. You have to correctly identify the letters. >>Fuzz text and all the letters without ascenders or descenders look alike; >>that's an awful lot of them! Symbolic codes have better error rejection >>for low error rates. That's why digital and FM before it deliver high >>fidelity. But like the little girl with the little curl; when they are >>bad... watch out! > >Jon Gunderson, Ph.D., ATP >Coordinator of Assistive Communication and Information Technology >Division of Rehabilitation - Education Services >MC-574 >College of Applied Life Studies >University of Illinois at Urbana/Champaign >1207 S. Oak Street, Champaign, IL 61820 > >Voice: (217) 244-5870 >Fax: (217) 333-0248 > >E-mail: jongund@uiuc.edu > >WWW: http://www.staff.uiuc.edu/~jongund >WWW: http://www.w3.org/wai/ua >
Received on Friday, 6 October 2000 10:27:23 UTC