Multimedia database

About: Multimedia database is a research topic. Over the lifetime, 1404 publications have been published within this topic receiving 19856 citations. The topic is also known as: Multimedia database & MMDB.

Multimedia contents control method for multimedia database with wireless and wireline data synchronization technology

Abstract: PURPOSE: A method for managing the multimedia contents by using a wire/wireless data synchronization technology and a wireless multimedia exclusive database is provided to increase the compression ratio maximally for the compression and the playback and to maximally reduce the time for the decompression for the playback. CONSTITUTION: A sound, an image and a text as the component of the multimedia are respectively assigned as an object and stored in the multimedia exclusive database as a serial stream. An index file is configured by assigning the position information of each object in the multimedia database to an index. A version of each object comprising the multimedia contents is assigned and the version information stored in the multimedia database. The multimedia contents are always updated newly through the synchronization technology by using each object of the multimedia data and the version of the object.

Query Composition: Why Does It Have to Be So Hard?

Abstract: Project Envision, a large research effort at Virginia Tech, focuses on developing a user centered multimedia database from the computer science literature with full-text searching and full-content retrieval capabilities. User interviews indicate that people have trouble composing queries. Widely available boolean retrieval systems present problems with both syntax and logic. Natural language queries for vector space retrieval systems are easier to compose but users complain that they do not understand the matching principles used; users also complain that they have too little control over the search and fear being overwhelmed by an enormous retrieval set. We describe the Envision query window which has as a usability goal making query composition easy while increasing user control. Results of formative usability evaluation and subsequent redesign are discussed.

Object-relational database infrastructure for interactive multimedia service

Abstract: Modern interactive multimedia services, such as the video-on-demand, electronic library, and etc. tend to involve large-scale media archives of audio records, video clips, image banks, and text documents. Thus, these services impose many challenges on designing and implementing new generation database systems. In this paper, we first introduce a new multimedia data model, which could accommodate sophisticated media types, as well as complex relationships among different media entities. Thereafter, an object-relationship media types, as well as complex relationships among different media entities. Thereafter, an object-relational database infrastructure is proposed, to support applications of the data model developed in our project. The infrastructure is designated both as a framework for designing and implementing multimedia databases, and as a reference model to compare and evaluate different database systems. Features of the proposed infrastructure, as well as its implementation into a prototype multimedia database system, are also discussed in the paper.

A distributed video retrieval system utilising broadband networked PC's for educational applications

Abstract: Conventional educational material is ever more complemented with computer based multimedia material. In order to make this material available to teachers and students in a structured manner, we developed a multimedia database and accompanying tools for creating, manipulating and formatting the teaching content (K. Coninx et al., 1997). Recently, we expanded this educational multimedia database with the functionality to support streamed video as well. Given the vast amounts of data that needs to be stored and transmitted when dealing with streamed video retrieval, we opted to realise a distributed video server. Physically, the distributed server consists of a set of Windows NT PCs, which are interconnected utilising a broadband ATM network. The paper reports on the main implementation aspects of the system.

A new semantic model with applications in a multimedia database system

Abstract: When people realized that relational databases fall short in supporting advanced applications including multimedia data management due to the limited modeling power of the relational data model, researchers went ahead with devising semantic, object-oriented data models in the 1980s (until early 1990s). While the later commercial development of database systems has led to the so-called object-relational databases since late 1990s, such a marriage of the two does not actually solve the problems encountered by multimedia data management. In this paper, we present a new semantic multimedia database model based on an extension to the traditional ANSI-SPARC three-level architecture, attempting to cater for the unique requirements of multimedia data management. Various facilities of this semantic multimedia database model are described and discussed. A number of applications have been developed based on this new model, and in this paper we shall describe some of these including recipe modeling and graph mining for retrieval. Copyright © 2008 John Wiley & Sons, Ltd.