Some applications for accessibility

Overview

1. Images and CCF
2. Content Selection
3. Fix Inaccessible Content

Introduction

• The Semantic Web allows
  • Anyone, to say
  • Anything, about
  • Anything

For example

Anybody might note that an image

shows a person called Charles McCathieNevile

(Some tools for doing this are available)

Concept Coding Framework

Allowing users to communicate with symbols

Creating messages that can be translated to other symbol sets

Based on SKOS thesaurus work

(demo message creator from CCF group)

Adding value

Adding concrete images helps identify people

There are tools for searching for images

We could also...

• Allow blind authors to illustrate content
• Use sign languages (not so simple...)
• Look for images of particular things

Content Selection

• Getting content that matches me
  • User needs
  • Complexity
  • Browser compatibility
  • ...

Parallel approaches

AccLip

From IMS - information about a profile of user needs

CC/PP

From W3C - mosly about mobile phone capability

EARL

From W3C - about conformance (of/to what?)

Creating the information

Various tools for various jobs

Hera - specific to accessibility

W3C Validator - more specific task

Many library-type tools

Using the information

There is a work which has

• title (english) "Theory of Relativity"
• creator Albert Einstein
• idioma "Deutsch"
• version provided by Bartleby
• version which has
  • format "film"
  • creator "NCAM"
  • isAlternativ to versionBartleby

  ....etc

To get the right stuff

A movie, simple level, captioned in spanish, ...

Reusing information

• Some of this is special purpose
• Lots of it is general bibliographic stuff
• So we can expect to find it already

  - and RDF (Semantic Web) is all about mixing for useful results.

Fixing content

Not always easy

• Do we have control of the original?
• Is standards conformance important?
• Do we know what's needed?

Repair Tools

(LIFT for Dreamweaver, AccRepair, many many others)

• Use EARL to guide repairs
• Possible, but some current issues
• Area of active development

Specialised approach

Using information about a page to optimise. For

• a CMS referring to external resources
• special set of user needs
• retro-fitting real web content

SWAP - a tool

• Mapping page structure
• Using images to illustrate
• Adding keyboard navigation

Making content legible

before

COMMUNICATION FROM THE COMMISSION On the Establishment of Eurojust

After

COMMUNICATION FROM THE COMMISSION On the Establishment of Eurojust

(JPG page map)