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Title
Abstract
Introduction
Overview of the User Interface Prototype (Itvsimu)
Overview of the Expert System
The Content Recommendation Unit
Conclusions and Future Work
References
All Topics
Computer Science
Information Systems

Accessible interactive television using the MPEG-21 standard

Profile image of Christos-Nikolaos AnagnostopoulosChristos-Nikolaos Anagnostopoulos

2010, Universal Access in the Information Society

Abstract

In this paper, the accessibility of the interactive television (iTV) is being discussed as a primary factor for its satisfactory adoption and commercial success. The work presented here is undertaken in the context of a research project that focuses on delivering iTV services to disabled children. This objective is accomplished through the utilization of the arising MPEG-21 standard. Based on that standard, iTV accessibility is investigated in terms of metadata and content adaptation. The novelty of contribution lies on a systematic methodology that deals with a wide range of accessibility problems contrary to previous studies that focus mostly onto users with only one specific disability.

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Proceedings of the …, 2008

In this paper, the accessibility of the interactive television is being discussed seen as a primary factor for its satisfactory adoption and commercial success. This is a presentation of work undertaken in the context of a research project aiming at delivering iTV services to disabled children. The project approaches this objective through the utilization of the upcoming MPEG-21 ISO standard. Based on that, iTV accessibility is faced through metadata and adaptation. This work approaches the accessibility of iTV in a wider manner contrary to previous studies that focus mostly onto the users with low vision. Such a case study is being presented accompanied with a discussion of relevant architectures, technologies and faced design issues.

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The development of TV applications nowadays excludes users with certain impairments from interacting with and accessing the same type of contents as other users do. Developers are also not interested in developing new or different versions of applications targeting different user characteristics. In this paper we describe a novel adaptive accessibility approach on how to develop accessible TV applications, without requiring too much additional effort from the developers. Integrating multimodal interaction, adaptation techniques and the use of simulators in the design process, we show how to adapt User Interfaces to the individual needs and limitations of elderly users. For this, we rely on the identification of the most relevant impairment configurations among users in practical user-trials, and we draw a relation with user specific characteristics. We provide guidelines for more accessible and centered TV application development.

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Developing accessibility multimedia services: the case of EasyTV
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People with various degrees of disabilities (e.g., visually or hearing impaired) often find it difficult to access mainstream products and services and thus they are excluded from enjoying audio-visual services on an equal basis as people without disabilities. These people feel marginalized in today's digital society and they are unable to reach their maximum potential personally, professionally and socially. EasyTV aims to address these issues by providing numerous services that not only ease the access of people with disabilities to multimedia services, but also enhance interaction with the media through a multi-language approach that adapts content based on user's preferences. In this work, the main EasyTV services are described in detail. Furthermore, an evaluation of the main services by end users is presented and discussed in order to highlight the importance of offering accessibility services to people with disabilities.

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Online Channels in financial institutions allows customers with disabilities to access services in a convenient way for them. However, one of the current challenges of this sector is to improve web accessibility and to incorporate technological resources to provide access to multimedia and video content, which has become a new form of internet communication. The present work shows in detail the strategy followed when designing and developing the new video player used by Bankinter for these purposes.

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GUIDE: Creating accessible TV applications
Pradipta Biswas

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Objective In this paper we describe a novel adaptive accessibility framework for Hybrid TV platforms and the user-centred approach that is being used in its design. It integrates various types of user interface (UI) technologies, supports multimodal interaction, performs adaptation to individual needs and limitations of elderly users, and uses virtual user simulation for efficient UI testing in the design process. Main content Digital TV has gained importance as an interactive and personalized media terminal, now combining traditional broadcast content with internet and legacy web services. However, the elderly face problems when using these services. The availability of accessible user interfaces and supporting software is very limited. For developers, user-centred design and provision of accessible user interfaces is expensive and time-consuming. In order to support developers we propose a solution comprising of (1) an adaptive software framework and (2) a set of tools to support development, including a simulation tool. The software framework can be integrated in existing applications and provides an API for developers to automatically perform adaptation of user interface input and output data. The simulation tool is able to render simulated perception of elderly users for the developers. Results The approach presented relies on user modelling identifying the most relevant impairment configurations among users in comprehensive trials. Using the simulation tool, developers can iteratively make modifications in order to optimize their application's UI. Simulation considers models for perception, cognition and motor functions. The resulting design is then executed in a framework where first time users are characterised by a procedure which measures their individual abilities. A user model instance is then the foundation of a multi-modal adaptation module performing input fusion and output fission for various combinations of user interface technologies considering the user impairments and high level events describing the interaction context. As a result, the system selects proper combinations and configurations of available input and output modalities. Conclusion For elderly users, accessible ICT can make much more of a difference in living quality, by enabling and simplifying participation and inclusion in their surrounding communities. By supporting TV application developers through a design time simulation tool, and a run time adaptive framework, we lay the basis to drastically improve overall accessibility of these applications.

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Related topics

  • Information Systems
  • Computer Science
  • Interactive Television
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