article

Media Accessibility for Low-Vision Users in the MPEG-21 Multimedia Framework

Authors:

Truong Cong Thang,

Edward K. WongAuthors Info & Claims

IEICE - Transactions on Information and Systems, Volume E90-D, Issue 8

Pages 1271 - 1278

https://doi.org/10.1093/ietisy/e90-d.8.1271

Published: 01 August 2007 Publication History

Abstract

Ethical and legal requirements have made accessibility a crucial feature in any information systems. This paper presents a content adaptation framework, based on the MPEG-21 standard, to help low-vision users have better accessibility to visual contents. We first present an overview of MPEG-21 Digital Item Adaptation (DIA) and the low-vision description tool which enables interoperable content adaptation. This description tool lists seven low-vision symptoms, namely loss of fine detail, lack of contrast, central vision loss, peripheral vision loss, hemianopia, light sensitivity, and need of light. Then we propose a systematic contrast-enhancement method to improve the content visibility for low-vision users, focusing on the first two symptoms. The effectiveness of the low-vision description tool and our adaptation framework is verified by some experiments with an adaptation test-bed. The major advantages of the proposed approach include 1) support of a wide range of low-vision conditions, and 2) customized content adaptation to specific characteristics of each user.

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Cited By

Vlachogiannis EGavalas DAnagnostopoulos CTsekouras G(2008)Towards iTV accessibilityProceedings of the 1st international conference on PErvasive Technologies Related to Assistive Environments10.1145/1389586.1389626(1-6)Online publication date: 16-Jul-2008
https://dl.acm.org/doi/10.1145/1389586.1389626

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cover image IEICE - Transactions on Information and Systems

IEICE - Transactions on Information and Systems Volume E90-D, Issue 8

August 2007

191 pages

ISSN:0916-8532

EISSN:1745-1361

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Copyright © Copyright © 2007 The Institute of Electronics, Information and Communication Engineers.

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Oxford University Press, Inc.

United States

Publication History

Published: 01 August 2007

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Cited By

Vlachogiannis EGavalas DAnagnostopoulos CTsekouras G(2008)Towards iTV accessibilityProceedings of the 1st international conference on PErvasive Technologies Related to Assistive Environments10.1145/1389586.1389626(1-6)Online publication date: 16-Jul-2008
https://dl.acm.org/doi/10.1145/1389586.1389626

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