- From: David MacDonald <befree@magma.ca>
- Date: Thu, 25 Jan 2007 15:20:55 -0500
- To: "'Sean Hayes'" <Sean.Hayes@microsoft.com>, "'List WAI GL'" <w3c-wai-gl@w3.org>
- Message-ID: <001f01c740be$52806aa0$650fa8c0@home>
Hi Sean I used the analyzer tool that the Understanding Doc links to. HYPERLINK "http://www.wat-c.org/tools/CCA/LCRA/index.html"http://www.wat-c.org/tools/C CA/LCRA/index.html In my test page HYPERLINK "http://www.eramp.com/david/general/dithering.htm"http://www.eramp.com/david /general/dithering.htm I am suggesting they add to the software, an additional algorithm for dithered images where they sample several pixels and average them rather than simply forcing the user to choose one pixel. Perhaps that that could be triggered by a control that says something like “settings for measuring dithered images”. I hope that helps David MacDonald access empowers people... ...barriers disable them... HYPERLINK "http://www.eramp.com"www.eramp.com _____ From: Sean Hayes [mailto:Sean.Hayes@microsoft.com] Sent: Thursday, January 25, 2007 11:30 AM To: David MacDonald; 'List WAI GL' Subject: RE: Dithering and contrast I'm sorry to be coming late to this discussion, but could you provide a little context, for example perhaps you could explain how you arrive at the canonical rendering which the contrast analyser is to test. Sean Hayes Standards and Policy Team Accessible Technology Group Microsoft Phone: mob +44 7977 455002 office +44 117 9719730 _____ From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf Of David MacDonald Sent: 25 January 2007 03:44 To: 'List WAI GL' Subject: Dithering and contrast I had an action item to examine dithering and its relationship to contrast ratio measurements. I’ve posted the results of the testing here. HYPERLINK "http://www.eramp.com/david/general/dithering.htm"http://www.eramp.com/david /general/dithering.htm David MacDonald access empowers people... ...barriers disable them... HYPERLINK "http://www.eramp.com"www.eramp.com -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.17.8/649 - Release Date: 1/23/2007 8:40 PM -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.17.10/651 - Release Date: 1/24/2007 6:48 PM -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.17.10/651 - Release Date: 1/24/2007 6:48 PM
Received on Thursday, 25 January 2007 20:21:18 UTC