Re: @alt descriptions for Thing Descriptions

I wonder whether it would be most prudent to push for both accessible
SVG and Summary/Details explanatory text?

George Kerscher writes:
> Hi,
> 
> I think that there may be at least two good alternatives for complex
> graphics. SVG, as you suggest and I am looking forward to guidance on these.
> 
> In addition there is the extended description approach, where a textual
> description may be more appropriate. We have collected some approaches in
> the extended description EPUB you can download from:
> http://www.epubtest.org/testbooks
> This takes advantage of the details element with its expanding and
> collapsing   nature. This may be less intrusive to the reader, and yet it is
> available to anybody who wants more information.
> 
> Best
> George
> 
> 
> -----Original Message-----
> From: Janina Sajka (janina@rednote.net) <janina@rednote.net> 
> Sent: Thursday, June 13, 2019 8:18 AM
> To: Joshue O Connor <joconnor@w3.org>
> Cc: W3C WAI Accessible Platform Architectures <public-apa@w3.org>
> Subject: Re: @alt descriptions for Thing Descriptions
> 
> Long descriptions? Nah, we killed those with HTML 5, right? Who needs
> those! <grin>
> 
> On a serious note, should we be recommending these be SVG so that we can
> use accessible SVG and someone can actually explore the relationship
> matrix directly?
> 
> Joshue O Connor writes:
> > On 13/06/2019 15:03, Janina Sajka (janina@rednote.net) wrote:
> > 
> > > Hey, Josh:
> > > 
> > > +APA list
> > > 
> > > So, you're more the expert on WCAG requirements for such "things, ..."
> > > ----- Sorry, couldn't resist!
> > 
> > Boom Boom!
> > 
> > 
> > > Question: Are these detailed in the text otherwise provided by the spec?
> > 
> > Not really, or at least the visual representation shows how objects,
> classes
> > and instances of same relate to each other.
> > 
> > There are lots of nodes and arrows showing relationships. I'll have a go
> at
> > abstracting them out and will forward to the list.
> > 
> > 
> > > If so, simply giving good alt should be sufficient,
> > 
> > These are for sure in the @longdesc section *grin.
> > 
> > Thanks
> > 
> > Josh
> > 
> > 
> > > right? Else, yes
> > > please!
> > > 
> > > Best,
> > > 
> > > Janina
> > > 
> > > Joshue O Connor writes:
> > > > Hi Janina,
> > > > 
> > > > I'm reviewing the Thing Description in more detail and have looked at
> the
> > > > figures contained in it. There are ~5.
> > > > 
> > > > The @alt for 4 of them is 'UML diagram of the TD information model for
> the
> > > > hypermedia controls vocabulary' and they represent:
> > > > 
> > > > Figure1TD core vocabulary,
> > > > Figure2JSON schema vocabulary
> > > > Figure3WoT security vocabulary
> > > > Figure4Hypermedia controls vocabulary
> > > > 
> > > > Do you want me to write up in detail the UML descriptions?
> > > > 
> > > > They take the form:
> > > > 
> > > > <example>
> > > > 
> > > > Thing (linking to Form/Link/Multilanguage/VersionInfo)
> > > > 
> > > > @context :anyURL (or Array)
> > > > 
> > > > @type: string
> > > > 
> > > > id: anyURI
> > > > 
> > > > [...]
> > > > 
> > > > </example>
> > > > 
> > > > They are a little gnarly to describe but I can do it if you need it.
> > > > 
> > > > Whereas one of them represents a representation of a 'TD
> Serialization, TD
> > > > and Thing on a light switch example' which is again a JSON type
> > > > visualisation.
> > > > 
> > > > Ok, it will take a little time, but that's ok if its helpful to you.
> > > > 
> > > > Josh
> > > > 
> > > > -- 
> > > > Emerging Web Technology Specialist/A11y (WAI/W3C)
> > > > 
> > -- 
> > Emerging Web Technology Specialist/A11y (WAI/W3C)
> 
> -- 
> 
> Janina Sajka
> 
> Linux Foundation Fellow
> Executive Chair, Accessibility Workgroup:	http://a11y.org
> 
> The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
> Chair, Accessible Platform Architectures	http://www.w3.org/wai/apa
> 
> 
> 

-- 

Janina Sajka

Linux Foundation Fellow
Executive Chair, Accessibility Workgroup:	http://a11y.org

The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair, Accessible Platform Architectures	http://www.w3.org/wai/apa

Received on Thursday, 13 June 2019 17:39:27 UTC