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.

On stability of adaptive similarity measures for content-based image retrieval

Abstract: Retrieving similar images is a challenging task for today's content-based retrieval systems. Aiming at high retrieval performance, these systems frequently capture the user's notion of similarity through expressive image models and adaptive similarity measures, which try to approximate the individual user-dependent notion of similarity as close as possible. As image models appearing on the query side can significantly differ in quality compared to those stored in the multimedia database, similarity measures have to be robust against these individual quality changes in order to maintain high retrieval performance. In order to evaluate the robustness of similarity measures, we introduce the general concept of the stability of a similarity measure with respect to query modifying transformations describing the change in quality on the query side. In addition, we include a comparison of the stability of the major state-of-the-art adaptive similarity measures based on different benchmark image databases.

Multimedia in cultural heritage collections: a model and applications

Abstract: The paper presents a multimedia database model accounting for the representation of documents, collections and the associated metadata. Appropriate structures are provided for descriptive metadata and for metadata resulting from automatic content analysis. The model is based on the identification and unification of the main concepts in the archival standards and the audiovisual area. The main features of the model, designed to support multimedia database applications, are the integration of descriptive and content analysis metadata, the association of metadata to collections as well as to items, the extensibility with respect to the inclusion of new descriptors and the support to several retrieval modes. The MetaMedia application development platform, based on the model, has been used to support the construction of a historic documentation collection where a common web interface provides collection administrators, metadata creators and visitors a multi-faceted view of the repository.

An Object-Oriented Modeling of Multimedia Database Objects and Applications

Abstract: An important issue in multimedia information systems is the lack of models for integrated representation of multimedia objects and applications. Here we discuss various aspects concerning multimedia data modelling. Moreover we propose an object oriented data base model (MOAP — Multimedia Object and Application Model) that aims at representation of multimedia objects and applications. The application representation is based on composition (spatial and temporal) and scenario modelling. An important feature of the MOAP is the approach for integrated modelling of the multimedia objects as well as of the applications.

METIS: a flexible foundation for the unified management of multimedia assets

Abstract: Multimedia database systems typically focus on specific kinds of media and/or applications. This article gives an architectural overview of METIS, a database foundation for a unified management of any variety of media that is flexibly customizable to different application needs. METIS is based on an expressive data model that can instantiate any desired scheme for media management, description, and classification. Kernel plug-ins and frameworks enable profound customizations of the system core, such as media- and domain-specific query operators, similarity measures, and feature extraction algorithms. METIS is built on a persistence abstraction layer that facilitates switching of storage back-ends and offers a customizable web front-end for administration and media management. So-called semantic packs permit the bundling of domain-specific customizations. As we illustrate with two application scenarios, METIS thus establishes a common media management foundation for a broad spectrum of multimedia applications.