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.

Design and performance evaluation considerations of a multimedia medical database

Abstract: Multimedia information management and communications systems for medical applications have been undergoing design and development. The aim of these activities has been the development of distributed computer systems providing storage, processing, and communication services required by the medical community. One of the main critical issues of such systems is the handling of multimedia information (i.e., text, images, graphics, and voice) in a uniform way and the fast access to images through the network. We present the design architecture and concepts used in our multimedia database system, along with its performance evaluation. The evaluation focuses on the response times of a multimedia medical database server, as seen by remote workstations for various retrieval and image transfer requests. For this purpose, a queueing network model was developed and simulated. Communications between the workstations and the database server are governed by the client-server model using TCP/IP and appropriate application protocols on a 10 Mb/s Ethernet LAN. >

Spatio-temporal query for multimedia databases

Abstract: Complex media events are often characterized by spatio-temporal relations between its constituent media objects. A multimedia query language should support specification of such relations for semantic retrieval. We propose a method for formally defining 3D spatio-temporal relations between elementary media objects in this paper. To support soft decision making for multimedia data interpretation and to provide graded ranking, we define these relations using a set of fuzzy membership functions. It is possible to define fuzzy 3D extensions of Allen's relations as well as arbitrary new relations using our method. This method can be incorporated with upcoming multimedia query languages, such as MP7QF.

Special issue on multimedia database systems

Abstract: The areas expected to benefit enormously from the emerging multimedia technologies include advanced information management systems for a broad range of applications, remote collaboration via video teleconferencing, improved simulation methodologies for all disciplines of science and engineering, and better human-computer interfaces. Vast libraries of information including arbitrary amounts of text, video, pictures, and sound have the potential to be used more efficiently than the traditional book, record, and tape libraries of today. These applications are just samples of the things possible with the development and use of multimedia databases. As the need for multimedia information systems is growing rapidly in various fields, management of such information is becoming a focal point of research in the database community. This partially explains the explosion of research in the areas related to the understanding, development, and use of multimedia-related technologies. With all the euphoria surrounding the potential benefits of the coming multimedia revolution, computer scientists and engineers are faced with real technological challenges that are pushing the available hardware, as well as the ingenuity of human thought, to their limits. Some of the hardware problems are:

MoodView: an advanced graphical user interface for OODBMSs

Abstract: OODBMSs need more than declarative query languages and programming languages as their interfaces since they are designed and implemented for complex applications requiring more advanced and easy to use visual interfaces. We have developed a complete programming environment for this purpose, called MoodView. MoodView translates all the user actions performed through its graphical interface to SQL statements and therefore it can be ported onto any object-oriented database systems using SQL.MoodView provides the database programmer with tools and functionalities for every phase of object oriented database application development. Current version of MoodView allows a database user to design, browse, and modify database schema interactively and to display class inheritance hierarchy as a directed acyclic graph. MoodView can automatically generate graphical displays for complex and multimedia database objects which can be updated through the object browser. Furthermore, a database administration tool, a full screen text-editor, a SQL based query manager, and a graphical indexing tool for the spatial data, i.e., R Trees are also implemented.

Adaptive and incremental processing for distance join queries

Abstract: A spatial distance join is a relatively new type of operation introduced for spatial and multimedia database applications. Additional requirements for ranking and stopping cardinality are often combined with the spatial distance join in online query processing or Internet search environments. These requirements pose new challenges as well as opportunities for more efficient processing of spatial distance join queries. In this paper, we first present an efficient k-distance join algorithm that uses spatial indexes such as R-trees. Bidirectional node expansion and plane-sweeping techniques are used for fast pruning of distant pairs, and the plane-sweeping is further optimized by novel strategies for selecting a sweeping axis and direction. Furthermore, we propose adaptive multistage algorithms for k-distance join and incremental distance join operations. Our performance study shows that the proposed adaptive multistage algorithms outperform previous work by up to an order of magnitude for both k-distance, join and incremental distance join queries, under various operational conditions.