1 / 16

Web design critique from visually impaired perspective

Web design critique from visually impaired perspective. CMSC 434 Sep 13, 2005 Hyunyoung Song (hsong@cs.umd.edu) Ahmad H. Ibrahim (amadib@mail.umd.edu). Outline. Screen reader Section 508 JAWS , Homepage Reader Demo. Screen reader Architecture. Pixel based GUI. Screen Reader.

trung
Download Presentation

Web design critique from visually impaired perspective

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Web design critiquefrom visually impaired perspective CMSC 434 Sep 13, 2005 Hyunyoung Song (hsong@cs.umd.edu) Ahmad H. Ibrahim (amadib@mail.umd.edu)

  2. Outline • Screen reader • Section 508 • JAWS , Homepage Reader • Demo

  3. Screen reader Architecture Pixel based GUI Screen Reader User Interface Off-screen model Messages Text to Speech Accessibility API Applications OS Braille Display

  4. Challenges in a Screen reader Pixel based GUI • Limits from Accessibility API • MS Word and MS Active Accessibility • Limits from Application Contents • Animations in Macromedia Flash User Interface Off-screen model Accessibility API Applications OS

  5. Applications • Commercial Products • JAWS by Freedom Scientific • Window-Eyes by GW Micro • VoiceOver for Mac OS X by Apple • Homepage Reader by IBM • Open Source Products • BRLTTY and suse-blinux for unix text consoles • Gnopernicus for unix graphical applications exporting the AT-SPI interface • Screenfull, an in-progress screen reader for Windows • Windows XP • Narrator +U

  6. Outline • Screen reader • Section 508 • JAWS , Homepage Reader • Demo

  7. 1194.1 Purpose • Give access to electronic and information technology to federal employees with disabilities • 1194.21 Software applications and OS • (c) A well-defined on-screen indication of the current focus shall be provided that moves among interactive interface elements as the input focus changes. The focus shall be programmatically exposed so that assistive technology can track focus and focus changes. • (d) Sufficient information about a user interface element including the identity, operation and state of the element shall be available to assistive technology. When an image represents a program element, the information conveyed by the image must also be available in text. • (l) When electronic forms are used, the form shall allow people using assistive technology to access the information, field elements, and functionality required for completion and submission of the form, including all directions and cues.

  8. 1194.2 Web-based intranet and internet information and applications • A text equivalent for every non-text element • Non-text element • Multimedia presentation: alternative text repr. • Color: shouldn’t imply information (ex. Markup) • Link: provide redundant text link instead of image link • Tables: provide rows and column headers • Script language sequence should have equivalent functional text that can be read by assistive tech. • Client-side image maps provided instead of server-side image maps • Web Content Accessibility Guildlines 1.0

  9. Outline • Screen reader • Section 508 • JAWS , Homepage Reader • Demo

  10. IBM Home Page Reader 3.04The voice of the World Wide Web • Reads Web pages, the Microsoft Windows desktop and selected system applications • Incorporates magnification and highlighting • Assists Web developers in testing for accessibility • Supports Adobe PDF and Macromedia Flash content • Provides access to popular Web-based e-mail applications • Includes Multilanguage IBM text-to-speech technology • Cost: $149.00

  11. Freedom Scientific JAWS • Skim Reading Summary • PAC Mate Desktop • PAC Mate Desktop allows you to control your desktop computer with your PAC Mate via an ActiveSync connection. • Hear Unicode and Hexadecimal Characters • Language Detection • detect the language of the current word and read it using the appropriate synthesizer voice. • Control How JAWS Uses Style Sheets • customization • PDF Table Verbosity Options • Wide-Range of supported software • Cost: $795.00; $1,495.00(NT)

  12. Usability for the Visually Impaired User • User input devices: keyboardvs.mouse 1. ALT+D Ctrl+L 2. Tab • User interface: textvs.image 1. menu icons 1. menu icons 2. notepad, word 2. flash, shockwave

  13. Usability for the Visually Impaired User • Readymade audio content ♪♫♪ • Favorite activities: E-mail, Downloading, Chatting • mail.yahoo.com, bittornado, AOL Instant Messenger • Favorite websites: live concert audio feed • www.bt.etree.org • Favorite applications: FTP, Direct Connect

  14. Outline • Screen reader • Section 508 • JAWS , Homepage Reader • Demo

  15. First Hand Experience Guest: Ahmed Zaghal

  16. References • http://en.wikipedia.org/wiki/Screen_reader • http://www.utoronto.ca/atrc/reference/tech/scread.html • http://www-3.ibm.com/able/solution_offerings/hpr.html • http://www.freedomscientific.com/fs_downloads/jaws.asp • http://www.nanopac.com/ • http://www.cs.wright.edu/bie/rehabengr/Comp1/Speech.htm • http://www.w3.org/TR/1999/WAI-WEBCONTENT-19990505 • http://www.section508.gov/

More Related