- From: Roberto Scano - IWA/HWG <rscano@iwa-italy.org>
- Date: Wed, 14 Dec 2005 09:43:12 +0100
- To: "'Gregg Vanderheiden'" <gv@trace.wisc.edu>, <w3c-wai-gl@w3.org>
Here is the study: http://www.hpl.hp.com/techreports/2005/HPL-2005-216.html -----Messaggio originale----- Da: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] Per conto di Gregg Vanderheiden Inviato: marted́ 13 dicembre 2005 17.29 A: w3c-wai-gl@w3.org Oggetto: RE: CLOSED: Issue #344 Yes We looked at lightness (L) as part of our work. We found that, depending on the values you choose, you end up with comparable results to the algorithm proposed. The one we proposed however seemed to perform better at lower black end. I will forward comparisons - though it is a bit involved since they didn't specify what the threshold values should be. The key to either approach would be to define the threshold values. The link you pointed to provides an equation but no values for the threshold. Further, the tests to date have only been carried out on subjects without vision impairments. They are hypothesizing research with people who have vision deficits but there has been none to date. If we were to use this in our guidelines (which is a possibility) we would need to have values for the threshold within the next 3 months. What values would they propose for level 2 and 3? What would it be based on? Could they come up with them within the next month? Gregg -- ------------------------------ Gregg C Vanderheiden Ph.D. Professor - Ind. Engr. & BioMed Engr. Director - Trace R & D Center University of Wisconsin-Madison -----Original Message----- From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf Of Roberto Scano (IWA/HWG) Sent: Tuesday, December 13, 2005 10:05 AM To: chris.ridpath@utoronto.ca; gv@trace.wisc.edu; w3c-wai-gl@w3.org Subject: Re: CLOSED: Issue #344 Here is it: http://english.contrastocolori.org/ ----- Messaggio originale ----- Da: "Chris Ridpath"<chris.ridpath@utoronto.ca> Inviato: 13/12/05 16.45.40 A: "Roberto Scano (IWA/HWG)"<rscano@iwa-italy.org>, "gv@trace.wisc.edu"<gv@trace.wisc.edu>, "w3c-wai-gl@w3.org"<w3c-wai-gl@w3.org> Oggetto: Re: CLOSED: Issue #344 Thanks for the information. I agree with Gez that it looks sensible and promising. > Hi, there is also the italian algorithm proposed in the list. > Roberto - Sorry I couldn't find it. Could you provide a link? Cheers, Chris [Messaggio troncato. Toccare Modifica->Segna per il download per recuperare la restante parte.]
Received on Wednesday, 14 December 2005 08:43:29 UTC