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Transcoding

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Part of the book series: Human-Computer Interaction Series ((HCIS))

Abstract

“Transcoding for Web accessibility” is a category of technologies to transform inaccessible Web content into accessible content on the fly. It was invented to help people with disabilities access inaccessible Web pages without asking the content authors to modify their pages. It does this by converting the content on the fly in an intermediary server between the Web server and the Web browser. The technology has matured along with voice browsing technology from circa 1992. In this chapter, we will first cover the history of the transcoding technologies, and then introduce technical details of these transcoding systems. Finally, we discuss future directions and technical problems.

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References

  • AIDE: AT&T Internet Difference Engine, AT&T, http://www.research.att.com/sw/tools/aide/

  • History of Asahi-net; see http://www.asahi-net.co.jp/history.html (in Japanese)

  • Asakawa, C. and Lewis, C. (1998) Home page reader: IBM's talking web browser. In Closing the Gap Conference Proceedings.

    Google Scholar 

  • Asakawa, C. and Itoh, T. (1998) User interface of a Home Page Reader. In Proceedings of the Third international ACM Conference on Assistive Technologies (Marina del Rey, California, United States, April 15–17, 1998). Assets '98. ACM Press, New York, NY, pp. 149–156.

    Google Scholar 

  • Asakawa, C. and Itoh, T. (1999) User interface of a nonvisual table navigation method. In CHI '99 Extended Abstracts on Human Factors in Computing Systems (Pittsburgh, Pennsylvania, May 15–20, 1999). CHI '99. ACM Press, New York, NY, pp. 214–215.

    Google Scholar 

  • Asakawa, C. and Takagi, H. (2000) Annotation-based transcoding for nonvisual web access. In Proceedings of the Fourth international ACM Conference on Assistive Technologies (Arlington, Virginia, United States, November 13–15, 2000). Assets '00. ACM Press, New York, NY, pp. 172–179.

    Google Scholar 

  • Asakawa, C. (2005) What's the web like if you can't see it? In Proceedings of the 2005 international Cross-Disciplinary Workshop on Web Accessibility (W4a) (Chiba, Japan, May 10–10, 2005). W4A '05, Vol. 88. ACM Press, New York, NY, pp. 1–8.

    Google Scholar 

  • Bickmore, T. W. and Schilit, B. N. (1997) Digestor: Device-independent access to the World-Wide Web. In Proceedings of the 6th International World-Wide Web Conference.

    Google Scholar 

  • Barrett, R., Maglio, P. P., and Kellem, D. C. (1997) How to personalize the Web. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (Atlanta, Georgia, United States, March 22–27, 1997). S. Pemberton, Ed. CHI '97. ACM Press, New York, NY, 75–82.

    Google Scholar 

  • Bechhofer, S., Harper, S., and Lunn, D. (2006) SADIe: Semantic Annotation for Accessibility. In 5th International Semantic Web Conference (ISWC’06), pp. 101–115, Athens, GA, USA

    Google Scholar 

  • BETSIE: BBC Education Text to Speech Internet Enhancer. British Broadcasting Corporation (BBC) Education; see http://www.bbc.co.uk/education/betsie/

  • Bigham, J. P., Kaminsky, R. S., Ladner, R. E., Danielsson, O. M., and Hempton, G. L. (2006) WebInSight:: making web images accessible. In Proceedings of the 8th international ACM SIGACCESS Conference on Computers and Accessibility (Portland, Oregon, USA, October 23–25, 2006). Assets '06. ACM Press, New York, NY, pp. 181–188.

    Google Scholar 

  • Bigham, J. P. (2007) Increasing web accessibility by automatically judging alternative text quality. In Proceedings of the 12th international Conference on intelligent User interfaces (Honolulu, Hawaii, USA, January 28–31, 2007). IUI '07. ACM Press, New York, NY, pp. 349–352.

    Google Scholar 

  • Bigham, J. P. and Ladner, R. E. (2007) Accessmonkey: a collaborative scripting framework for web users and developers. In Proceedings of the 2007 international Cross-Disciplinary Conference on Web Accessibility (W4a) (Banff, Canada, May 07–08, 2007). W4A '07, Vol. 225. ACM Press, New York, NY, pp. 25–34.

    Google Scholar 

  • Y. Borodin. (2006) A flexible vxml interpreter for non-visual web access. In ACM Conf. on Assistive Technologies (ASSETS).

    Google Scholar 

  • Borodin, Y., Mahmud, J., Ramakrishnan, I. V., and Stent, A. (2007) The HearSay non-visual web browser. In Proceedings of the 2007 international Cross-Disciplinary Conference on Web Accessibility (W4a) (Banff, Canada, May 07–08, 2007). W4A '07, Vol. 225. ACM Press, New York, NY, pp. 128–129.

    Google Scholar 

  • Brown, SS and Robinson, P. (2001) A World Wide Web mediator for users with low visions, presented at CHI2001 Workshop 14, Seattle, Washington, US, 31 March–5 April 2001

    Google Scholar 

  • Buyukkokten, O., Garcia-Molina, H., Paepcke, A., and Winograd, T. (2000) Power browser: efficient Web browsing for PDAs. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (The Hague, The Netherlands, April 01–06, 2000). CHI '00. ACM Press, New York, NY, pp. 430–437.

    Google Scholar 

  • Buyukkokten, O., Garcia-Molina, H., and Paepcke, A. (2001) Accordion summarization for end-game browsing on PDAs and cellular phones. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (Seattle, Washington, United States). CHI '01. ACM Press, New York, NY, pp. 213–220.

    Google Scholar 

  • Document Object Model (DOM), World Wide Web Consortium, http://www.w3.org/DOM/

  • Dardailler D. The ALT-server ("An eye for an alt"):, http://www.w3.org/WAI/altserv.htm

  • De Witt , John C., Hakkinen and Markku T. (1998) Surfing the Web with pwWebSpeak (tm), in Proceedings of the Technology & Persons with Disabilities Conference (CSUN 98), http://www.dinf.ne.jp/doc/english/Us_Eu/conf/csun_98/csun98_159.htm

  • DiffWeb: ALPAS Solutions, http://www.diffweb.com/

  • Fukuda, K., Takagi, H., Maeda ,J., and Asakawa, C. (2003) “An Assist Method for Realizing a Web Page Structure for Blind People”, Proceedings of HCI International 2003 (Universal Access in HCI), June2003, pp. 960–964.

    Google Scholar 

  • Goble, C., Harper, S., and Stevens, R. (2000) The travails of visually impaired web travellers. In Proceedings of the Eleventh ACM on Hypertext and Hypermedia (San Antonio, Texas, United States, May 30–June 03, 2000). HYPERTEXT '00. ACM Press, New York, NY, pp. 1–10.

    Google Scholar 

  • Goose, S., Wynblatt, M., and Mollenhauer, H. (1998) 1-800-hypertext: browsing hypertext with a telephone. In Proceedings of the Ninth ACM Conference on Hypertext and Hypermedia : Links, Objects, Time and Space—Structure in Hypermedia Systems: Links, Objects, Time and Space—Structure in Hypermedia Systems (Pittsburgh, Pennsylvania, United States, June 20–24, 1998). HYPERTEXT '98. ACM Press, New York, NY, pp. 287–288.

    Google Scholar 

  • Greasemonkey; see https://addons.mozilla.org/ja/firefox/addon/748

    Google Scholar 

  • HTML Diff: C3 Project, Stanford University, http://www-db.stanford.edu/c3/c3.html

  • Hanson, V. L. (2001) Web access for elderly citizens. In Proceedings of the 2001 EC/NSF Workshop on Universal Accessibility of Ubiquitous Computing: Providing For the Elderly (Alcácer do Sal, Portugal, May 22–25, 2001). WUAUC'01. ACM Press, New York, NY, pp. 14–18.

    Google Scholar 

  • Hanson, V. L. and Richards, J. T. (2004) A web accessibility service: update and findings. In Proceedings of the 6th international ACM SIGACCESS Conference on Computers and Accessibility (Atlanta, GA, USA, October 18–20, 2004). Assets '04. ACM Press, New York, NY, pp. 169–176.

    Google Scholar 

  • Harper, S. and Patel, N. (2005) Gist summaries for visually impaired surfers. In Proceedings of the 7th international ACM SIGACCESS Conference on Computers and Accessibility (Baltimore, MD, USA, October 09–12, 2005). Assets '05. ACM Press, New York, NY, pp. 90–97.

    Google Scholar 

  • Harper, S. and Bechhofer, S. (2005) Semantic triage for increased Web accessibility. IBM Systems Journal, 44(3): pp. 637–648.

    Article  Google Scholar 

  • Harper, S., Bechhofer, S., and Lunn, D. (2006a) Taming the inaccessible web. In Proceedings of the 24th Annual Conference on Design of Communication (Myrtle Beach, SC, USA, October 18–20, 2006). SIGDOC '06. ACM Press, New York, NY, pp. 64–69.

    Google Scholar 

  • Harper, S., Bechhofer, S., and Lunn, D. (2006b) SADIe:: transcoding based on CSS. In Proceedings of the 8th international ACM SIGACCESS Conference on Computers and Accessibility (Portland, Oregon, USA, October 23–25, 2006). Assets '06. ACM Press, New York, NY, pp. 259–260.

    Google Scholar 

  • Hori M., Kondoh G., Ono S., Hirose S., and Singhal S. (2000) Annotation-Based Web Content Transcoding. In Proceedings of The Ninth International World Wide Web Conference (WWW9) (May 2000).

    Google Scholar 

  • Huang, A. W. and Sundaresan, N. (2000) Aurora: a conceptual model for Web-content adaptation to support the universal usability of Web-based services. In Proceedings on the 2000 Conference on Universal Usability (Arlington, Virginia, United States, November 16–17, 2000). CUU '00. ACM Press, New York, NY, pp. 124–131.

    Google Scholar 

  • Huang, A. W. and Sundaresan, N. 2000. A semantic transcoding system to adapt Web services for users with disabilities. In Proceedings of the Fourth international ACM Conference on Assistive Technologies (Arlington, Virginia, United States, November 13–15, 2000). Assets '00. ACM Press, New York, NY, pp. 156–163.

    Google Scholar 

  • Iaccarino, G., Malandrino, D., and Scarano, V. (2006) Personalizable edge services for web accessibility. In Proceedings of the 2006 International Cross-Disciplinary Workshop on Web Accessibility (W4a): Building the Mobile Web: Rediscovering Accessibility? (Edinburgh, U.K., May 22–22, 2006). W4A, Vol. 134. ACM Press, New York, NY, pp. 23–32.

    Google Scholar 

  • Iaccarino, G., Malandrino, D., Del Percio, M., and Scarano, V. (2006) Efficient edge-services for colorblind users. In Proceedings of the 15th International Conference on World Wide Web (Edinburgh, Scotland, May 23–26, 2006). WWW '06. ACM Press, New York, NY, pp. 919–920.

    Google Scholar 

  • JAWS, Freedom Scientific Inc.; see http://www.freedomscientific.com/

  • Laws, C. and Asakawa, C.(1999) IBM Home Page Reader: The Voice of the World Wide Web, In Proceedings of Technology and Persons with Disabilities conference (CSUN 1999).

    Google Scholar 

  • LiFT; see http://www.usablenet.com/

  • Lynx; see http://lynx.browser.org/

  • Maeda, J., Fukuda, K., Takagi, H., Asakawa, C.(2004) Web accessibility technology at TRL, In IBM Research and Development Journal, Vol. 48, No. 5/6.

    Google Scholar 

  • Maglio, P. and Barrett, R. (2000) Intermediaries personalize information streams. Commun. ACM 43, 8 (Aug. 2000), pp. 96–101.

    Google Scholar 

  • Mahmud, J., Borodin, Y., Das, D., and Ramakrishnan, I. V. (2007) Combating information overload in non-visual web access using context. In Proceedings of the 12th International Conference on Intelligent User interfaces (Honolulu, Hawaii, USA, January 28–31, 2007). IUI '07. ACM Press, New York, NY, pp. 341–344.

    Google Scholar 

  • Mahmud, J. U., Borodin, Y., and Ramakrishnan, I. V. (2007) Csurf: a context-driven non-visual web-browser. In Proceedings of the 16th International Conference on World Wide Web (Banff, Alberta, Canada, May 08–12, 2007). WWW '07. ACM Press, New York, NY, pp. 31–40.

    Google Scholar 

  • Miyashita, H., Sato, D., Takagi, H., and Asakawa, C. (2007) aiBrowser for Multimedia - Introducing Multimedia Content Accessibility for Visually Impaired Users, In Proceedings of the Ninth International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2007.

    Google Scholar 

  • microformats; see http://microformats.org/

  • Nagao, K. (2000) Semantic Transcoding: Making the World Wide Web More Understandable and Usable with External Annotations, In Proceedings of International Conference on Advanced in Infrastructure for Electronic Business, Science, and Education on the Internet.

    Google Scholar 

  • Nam, J., Yong Man Ro, Huh, Y., and Kim, M. (2005) Visual content adaptation according to user perception characteristics, In IEEE Transactions on Multimedia, 7, (3), pp. 435–445.

    Article  Google Scholar 

  • Plessers, P., Casteleyn, S., Yesilada, Y., De Troyer, O., Stevens, R., Harper, S., and Goble, C. (2005) Accessibility: a Web engineering approach. In Proceedings of the 14th international Conference on World Wide Web (Chiba, Japan, May 10–14, 2005). WWW '05. ACM Press, New York, NY, pp. 353–362.

    Google Scholar 

  • Rainville-pitt, S. and D'Amour, J. (2007) Using a CMS to create fully accessible websites. In Proceedings of the 2007 international Cross-Disciplinary Conference on Web Accessibility (W4a) (Banff, Canada, May 07–08, 2007). W4A '07, Vol. 225. ACM Press, New York, NY, pp. 130–131.

    Google Scholar 

  • Ramakrishnan, I. V., Stent, A., and Yang, G. (2004) Hearsay: enabling audio browsing on hypertext content. In Proceedings of the 13th international Conference on World Wide Web (New York, NY, USA, May 17–20, 2004). WWW '04. ACM Press, New York, NY, pp. 80–89.

    Google Scholar 

  • Resource Description Framework (RDF); see http://www.w3.org/RDF/

  • Richards, J. T. and Hanson, V. L. (2004) Web accessibility: a broader view. In Proceedings of the 13th international Conference on World Wide Web (New York, NY, USA, May 17–20, 2004). WWW '04. ACM Press, New York, NY, pp. 72–79.

    Google Scholar 

  • Sato, D., Miyashita, H., Takagi, H., and Asakawa, C. (2007) Automatic Accessibility Transcoding for Flash Content, In Proceedings of the Ninth International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS 2007). ??

    Google Scholar 

  • Section 508 of the Rehabilitation Act; see http://www.section508.gov/

  • Zhiyan Shao , Robert G. Capra, III , and Manuel A. Pérez-Quiñones (2003) Transcoding HTML to VoiceXML Using Annotation, Proceedings of the 15th IEEE International Conference on Tools with Artificial Intelligence, pp. 249, November 03–05

    Google Scholar 

  • Takagi, H. and Asakawa, C. (2000) Transcoding proxy for nonvisual web access. In Proceedings of the Fourth international ACM Conference on Assistive Technologies (Arlington, Virginia, United States, November 13–15, 2000). Assets '00. ACM Press, New York, NY, pp. 164–171.

    Google Scholar 

  • Takagi, H., Asakawa, C., Fukuda, K., and Maeda, J. (2002) Site-wide annotation: reconstructing existing pages to be accessible. In Proceedings of the Fifth international ACM Conference on Assistive Technologies (Edinburgh, Scotland, July 08–10, 2002). Assets '02. ACM Press, New York, NY, pp. 81–88.

    Google Scholar 

  • World Wide Web Consortium, Voice Browser Working Group, http://www.w3.org/Voice/

  • Volz, R., Handschuh, S., Staab, S., Stojanovic, L., and Stojanovic N. (2004) Unveiling the hidden bride: deep annotation for mapping and migrating legacy data to the Semantic Web. Journal of Web Semantics, 1(2):187.206, February 2004.

    Google Scholar 

  • Vorburger M., ALTifier, http://www.vorburger.ch/projects/alt/

  • Goose, S., Newman, M., Schmidt, C., and Hue, L. (2000) Enhancing Web Accessibility Via the Vox Portal and a Web Hosted Dynamic HTML<->VoxML Converter, ?? 2000-voxML

    Google Scholar 

  • WebAdapt2Me, IBM Corporation; see http://www-03.ibm.com/able/solution_offerings/WebAdapt2Me.htmlm

  • Web Access Gateway: the Association of C and C++ Users, http://www.accu.org/cgi-bin/access/access

  • WebSphere Transcoding Publisher, IBM Corporation; see http://www-4.ibm.com/software/webservers/transcoding/

  • XML Path Language (XPath): World Wide Web Consortium (W3C), http://www.w3.org/TR/xpath

  • Yesilada, Y., Stevens, R., and Goble, C. (2003) A foundation for tool based mobility support for visually impaired web users. In Proceedings of the 12th international Conference on World Wide Web (Budapest, Hungary, May 20–24, 2003). WWW '03. ACM Press, New York, NY, pp. 422–430.

    Google Scholar 

  • Yesilada, Y., Harper, S., Goble, C., and Stevens, R. (2004) DANTE: annotation and transformation of web pages for visually impaired users. In Proceedings of the 13th international World Wide Web Conference on Alternate Track Papers & Posters (New York, NY, USA, May 19–21, 2004). WWW Alt. '04. ACM Press, New York, NY, pp. 490–491.

    Google Scholar 

  • Zajicek, M., Powell, C., and Reeves C. (1999) Web search and orientation with brookestalk. In Proceedings of Tech. and Persons with Disabilities Conference

    Google Scholar 

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Correspondence to Chieko Asakawa .

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Asakawa, C., Takagi, H. (2008). Transcoding. In: Harper, S., Yesilada, Y. (eds) Web Accessibility. Human-Computer Interaction Series. Springer, London. https://doi.org/10.1007/978-1-84800-050-6_14

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