Accessible Graphics on the World Wide Web Dan J. Grauman - - PDF document

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Accessible Graphics on the World Wide Web Dan J. Grauman - - PDF document

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Interface 2003: Security and Infrastructure Protection 35 th Symposium on the Interface Accessible Graphics on the World Wide Web Dan J. Grauman Information Technology Specialist National Cancer Institute, NIH dan.grauman@nih.gov Salt Lake

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Accessible Graphics

  • n the

World Wide Web

Dan J. Grauman Information Technology Specialist National Cancer Institute, NIH dan.grauman@nih.gov

Salt Lake City, Utah March 13, 2003

Interface 2003: Security and Infrastructure Protection 35th Symposium on the Interface

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Topics

  • Accessibility
  • Background (Atlas)
  • The Atlas Web site

Online atlas Customizable maps Interactive graphs

  • Discussion
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Accessibility requirements* as of June 21, 2001 http://section508.gov/

Section 508 requires that Federal agencies’ electronic and information technology is accessible to people with disabilities. * Section 508 of the Rehabilitation Act of 1973, as amended 29 U.S.C § 794 (d)

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Excellent resource: http://usability.gov/

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Some statistics

An estimated 20% of the population in the United States has some kind of disability, and 10% has a severe

  • disability. Those individuals with

severe disabilities are limited in the way that they can use the Internet. The Pew study found that 62% of Internet users, or 73 million Americans, have gone online for health information. About 6 million use it on a given day – more than those who visit health professionals. According to Harris Interactive, 80% of

  • nline adults (110 million people) look

for health information online. This compares with 54 million in 1998, 69 million in 1999, and 97 million in 2001.

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What do we “see” on the Web?

This is what the SIGHTED user sees

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What do we “see” on the Web?

This is what the VISUALLY-IMPAIRED user sees

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What do we “see” on the Web?

This is what the BLIND user sees

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  • Text
  • Static graphics (pictures)
  • Dynamic graphs
  • Multimedia
  • Tables
  • Forms
  • Geospatial data (maps)

What are the main elements that can be found on a Web page?

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Most difficult Easiest Requires more effort

  • Text
  • Static graphics (pictures)
  • Dynamic graphs
  • Multimedia
  • Tables
  • Forms
  • Geospatial data (maps)

How easily can these elements be made accessible to people with disabilities?

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Examples of adaptive / assistive technology products Low vision: software products

Magnification + Screen reading Magnification + Screen reading

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Examples of adaptive / assistive technology products Low vision: hardware products

Hand-held magnification

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Examples of adaptive / assistive technology products Blindness: software products

Screen readers

Screen & Braille output

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Examples of adaptive / assistive technology products Blindness: hardware products

Braille displays

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Examples of adaptive / assistive technology products Blindness: hardware products

Braille embossers

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Background (Atlas)

  • Published in December 1999
  • Cancer mortality maps
  • Text & references
  • Tables & figures
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http://cancer.gov/atlasplus/

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Online atlas

Electronic version of book enabling user to view / print / download text, maps, graphs contained in the Atlas

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“Home Page” for each cancer

User can read the text summary for a specific cancer, view / download maps or data, obtain health information for that cancer, and link to the interactive graphs and customizable maps

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Example of text summary

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Customizable maps

Here users can generate maps not available in the Atlas, zoom in on a region or state, animate rates over time

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Input interface

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Lung cancer, WM, 1970-94 (state)

(monochrome)

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Lung cancer, WM, 1970-94 (state)

(Atlas colors)

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Text version (partial) of map (d link)

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Lung cancer, WM, 1970-94 (SEA)

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Text version (partial) of map (d link)

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Lung cancer, WM, 1970-94 (county)

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Text version (partial) of map (d link)

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Lung cancer, WM, 1970-94 (county) – highest 25%

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Text version (partial) of map (d link)

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Lung cancer, WM, 1970-94 (county) – highest 10%

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Text version (partial) of map (d link)

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Lung cancer, WM, 1970-94 (county) – highest 5%

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Text version (partial) of map (d link)

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Lung cancer, WM, 1970-94 (county) – highest 1%

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Text version (partial) of map (d link)

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Animation

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1950-54

Lung cancer by state economic area White males (common scale over time)

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1955-59

Lung cancer by state economic area White males (common scale over time)

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1960-64

Lung cancer by state economic area White males (common scale over time)

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1965-69

Lung cancer by state economic area White males (common scale over time)

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1970-74

Lung cancer by state economic area White males (common scale over time)

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1975-79

Lung cancer by state economic area White males (common scale over time)

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1980-84

Lung cancer by state economic area White males (common scale over time)

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1985-89

Lung cancer by state economic area White males (common scale over time)

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1990-94

Lung cancer by state economic area White males (common scale over time)

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Interactive graphs

Electronic version of book enabling user to view / print / download text, maps, graphs contained in the Atlas

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Rates by cancer Parameter selection interface Radio buttons enable user to navigate within and across categories by use

  • f the arrow and Tab keys
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All cancers - rates by cancer (US by state)

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Text version (partial) of graph (d link)

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Discussion