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.

Towards efficient horizontal multimedia database fragmentation using semantic-based predicates implication

Abstract: Partitioning techniques are traditionally used in distributed system design to reduce accesses to irrelevant information by grouping data frequently accessed together in specific fragments. Here, we address the primary horizontal fragmentation of textually annotated multimedia data. In this study, we discuss the issue of identifying semantic implications between textual-based multimedia predicates, as a crucial phase in the efficient partitioning of multimedia data. Our proposal integrates knowledge bases as a framework for assessing the semantic relatedness between predicate values and operators. We developed a prototype implementing the various aspects of multimedia semantic predicates implications. Experimental results show that the proposed method is polynomial in the number of user predicates as well as the sizes of the knowledge bases being employed. Realworld multimedia fragmentation tests are ongoing.

Content-Based Indexing and Retrieval Supported by Mobile Agent Technology

Abstract: In this paper we present the MultiMedia Database Mobile agent technology (M3) which supports personalized content-retrieval and indexing in a distributed Oracle 8i DB. We implemented an agency on top of the Oracle 8i JServer and realized mobility with the embedded Visbroker Corba ORB. A performance comparison of our mobile agent technology with a client-server solution for a nearest-neighbor search in an image database shows the efficiency of the proposed solution.

Distributed multimedia database system.

Abstract: A multiprocessor-based architecture is proposed for a heterogeneous multimedia database (HMD) system, in order to provide fast and transparent multimedia services. The design philosophy of this architecture is based on functional requirements imposed by the multimedia services. The model of the HMD architecture has four components: a network controller, multimedia servers, a communication network, and the user components. Each component is shown to be responsible for a subset of functions that are vital for providing the desired services.<>

LymPHOS: design of a phosphosite database of primary human T cells.

Abstract: Current proteomic technology is capable of producing huge amounts of analytical information, which is often difficult to manage in a comprehensive form. Curation, further annotation and public communication of proteomic data require the development of standard data formats and efficient, multimedia database structures. We have implemented a workflow for the annotation of a phosphopeptide database (LymPHOS) that includes tools for MS data filtering and phosphosite assignation, mass spectrum visualization, experimental description and accurate phosphorylation site assignation. Experimental annotations were fitted to current minimum information about a proteomics experiment guidelines. A new guideline for phosphoprotein sample preparation is also proposed. Currently, the database describes 342 phosphorylation sites mapping to more than 200 gene sequences, and it can be accessed through the net (http://www.lymphos.org).

Intelligent browsing for multimedia applications

Abstract: Describes a technique which we term "intelligent browsing"; the software built upon this technique assists the users in their search through a multimedia database. Searching for an item of interest in a large multimedia database is a complex task, even for users who have knowledge about it. An active (intelligent) browser suggests to the user items it estimates to be close to the target of the search. The intelligent part of the active browser consists of a learning module, whose object of study is the profile of the users' search actions. After a target is detected, the intelligent browser brings the item or items of interest on to the screen in a dedicated window, and controls the synchronization of the audio, video or written components of the item. If confirmed by the user, the dedicated window is transformed into a series of windows allocated to the desired item. The novel aspect of intelligent browsing is that it is entirely unobtrusive: it infers its similarity measure from the user's normal browsing actions, without any special input. Use of the browser on a multimedia application is illustrated in this paper.