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.

QuaSAQ: An approach to enabling end-to-end QoS for multimedia databases

Abstract: The paper discusses the design and prototype implementation of a QoS-aware multimedia database system. Recent research in multimedia databases has devoted little attention to the aspect of the integration of QoS support at the user level. Our proposed architecture to enable end-to-end QoS control, the QoS-Aware Query Processor (QuaSAQ), satisfies user specified quality requirements. The users need not be aware of detailed low-level QoS parameters, but rather specifies high-level, qualitative attributes. In addition to an overview of key research issues in the design of QoS-aware databases, this paper presents our proposed solutions, and system implementation details. An important issue relates to the enumeration and evaluation of alternative plans for servicing QoS-enhanced queries. This step follows the conventional query execution which results in the identification of objects of interest to the user. We propose a novel cost model for media delivery that explicitly takes the resource utilization of the plan and the current system contention level into account. Experiments run on the QuaSAQ prototype show significantly improved QoS and system throughput.

Database and data communication network systems : techniques and applications

Abstract: Database and Data Communication Network Systems examines the utilization of the Internet and Local Area/Wide Area Networks in all areas of human endeavor. This three-volume set covers, among other topics, database systems, data compression, database architecture, data acquisition, asynchronous transfer mode (ATM) and the practical application of these technologies. The international collection of contributors was culled from exhaustive research of over 100,000 related archival and technical journals. This reference will be indispensable to engineering and computer science libraries, research libraries, and telecommunications, networking, and computer companies. It covers a diverse array of topics, including: * Techniques in emerging database system architectures * Techniques and applications in data mining * Object-oriented database systems * Data acquisition on the WWW during heavy client/server traffic periods * Information exploration on the WWW * Education and training in multimedia database systems * Data structure techniques in rapid prototyping and manufacturing * Wireless ATM in data networks for mobile systems * Applications in corporate finance * Scientific data visualization * Data compression and information retrieval * Techniques in medical systems, intensive care units

Research issues in view-based multimedia database systems

Abstract: Audio, video, graphics, and text can be combined into stunning multimedia presentations which enable people to learn, buy, and have fun in ways never before possible. However multimedia is often unorganized and required tremendous storage space. Typical images are measured in tens or hundreds of kilobytes. To control the amount of space needed in this new environment, this paper proposes a multimedia database management system that uses logical representations instead of physical representations, to store edited objects. Research issues associated with such a system are discussed.

A generic scheme and sample implementation architecture for graceful service adaptation in multimedia database systems

Abstract: Today's limitations of general purpose distributed computing environments require for multimedia database system capabilities for the graceful adaptation of Quality of Service (QoS). This requirement is particularly acute for presentational applications where possibly hundreds of multimedia presentations must be performed simultaneously. The QoS adaptations must be coordinated with each other to provide for an optimal global resource utilization and the maximal viewer acceptance. To meet this goal, we propose the distributed playout load control scheme PYLOT which may be customized by content providers and viewers. Furthermore, we describe a generic implementation framework to deploy PYLOT and demonstrate this framework based on the AMOS multimedia database management system.

Cimwos: a multimedia, multimodal and multilingual indexing and retrieval system

Abstract: CIMWOS is a multimedia, multimodal and multilingual system supporting content-based indexing, archiving, retrieval, and on-demand delivery of audiovisual content. The system uses a multifaceted approach to locate important segments within multimedia material employing state-of-the-art algorithms for text, speech and image processing. The audio processing operations employ robust continuous speech recognition, speech/non-speech classification, speaker clustering and speaker identification. Text processing tools operate on the text stream produced by the speech recogniser and perform named entity detection, term recognition, topic detection, and story segmentation. Image processing includes video segmentation and key frame extraction, face detection and face identification, object and scene recognition, video text detection and character recognition. All outputs converge to a textual XML metadata annotation scheme following the MPEG-7 standard. These XML annotations are further merged and loaded into the CIMWOS multimedia database. Additionally, they can be dynamically transformed for interchanging semantic-based information. The retrieval engine is based on a weighted boolean model with intelligent indexing components. An ergonomic and user-friendly web-based interface allows the user to efficiently retrieve video segments by a combination of media description, content metadata and natural language text. The system is currently under evaluation.