QoS-based media retrieval for networked digital archives

✍ Scribed by Tatsuya Yamazaki

• Book ID: 102604929
• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 413 KB
• Volume: 25
• Category: Article
• ISSN: 1084-8045
• DOI: 10.1006/jnca.2002.0137

✦ Synopsis

When digital multimedia data are retrieved from distributed digital archives, Quality of Service (QoS) criteria can be used to enhance the user's usability. In this paper, assuming best-effort networks as the infrastructure, we describe a multimedia (MM) retrieval method based on the QoS concept for MM data archives in heterogeneous communication environments. We introduce a multi-level QoS model and use response time, which is calculated based on a system-level QoS criterion, as an application-level QoS criterion. The order of retrieving MM data is determined, based on both key-word matching using key words speci®ed by the user and the application-level QoS criterion. A prototype system is developed for retrieving sightseeing-related MM data including video, images, voice, and text. The proposed method of data retrieval has a shorter response time than methods that do not take QoS criteria into account. Also, a search method based on key-word association is described that enables wide-area search and effective information ®nding.