183,450 research outputs found
Towards an All-Purpose Content-Based Multimedia Information Retrieval System
The growth of multimedia collections - in terms of size, heterogeneity, and
variety of media types - necessitates systems that are able to conjointly deal
with several forms of media, especially when it comes to searching for
particular objects. However, existing retrieval systems are organized in silos
and treat different media types separately. As a consequence, retrieval across
media types is either not supported at all or subject to major limitations. In
this paper, we present vitrivr, a content-based multimedia information
retrieval stack. As opposed to the keyword search approach implemented by most
media management systems, vitrivr makes direct use of the object's content to
facilitate different types of similarity search, such as Query-by-Example or
Query-by-Sketch, for and, most importantly, across different media types -
namely, images, audio, videos, and 3D models. Furthermore, we introduce a new
web-based user interface that enables easy-to-use, multimodal retrieval from
and browsing in mixed media collections. The effectiveness of vitrivr is shown
on the basis of a user study that involves different query and media types. To
the best of our knowledge, the full vitrivr stack is unique in that it is the
first multimedia retrieval system that seamlessly integrates support for four
different types of media. As such, it paves the way towards an all-purpose,
content-based multimedia information retrieval system
Content warehouses
Nowadays, content management systems are an established technology. Based on the experiences from several application scenarios we discuss the points of contact between content management systems and other disciplines of information systems engineering like data warehouses, data mining, and data integration. We derive a system architecture called "content warehouse" that integrates these technologies and defines a more general and more sophisticated view on content management. As an example, a system for the collection, maintenance, and evaluation of biological content like survey data or multimedia resources is shown as a case study
A mobile Scenario for Electronic Publishing based on the MIPAMS Architecture
This paper describes several scenarios for the management of digital media, focusing on
electronic publishing from mobile environments. The solution proposed in those scenarios is based on MIPAMS (Multimedia Information Protection And Management System), a service-oriented Digital
Rights Management (DRM) platform, which enables the creation, registration and distribution of multimedia content in a secure way, respecting intellectual property rights. The particularity of the
mobile scenario with respect to others is the limited capability of mobile devices. A specific use case has been identified for the mobile environment and a new system, based on MIPAMS, has been designed for the electronic publishing environment.Postprint (published version
Research in information managment at Dublin City University
The Information Management Group at Dublin City University has research themes such as digital multimedia, interoperable systems and database engineering. In the area of digital multimedia, a collaboration with our School of Electronic Engineering has formed the Centre for Digital Video Processing, a university designated research centre whose aim is to research, develop and evaluate content-based operations on digital video information. To achieve this goal, the range of expertise in this centre covers the complete gamut from image analysis and feature extraction through to video search engine technology and interfaces to video browsing. The Interoperable Systems Group has research interests in federated databases and interoperability, object modelling and database engineering. This report describes the research activities of the major groupings within the Information Management community in Dublin City
University
Digital Libraries and Portals Saving National Cultural Heritage (IMI–BAS Experience)
The current research activities of the Institute of Mathematics and
Informatics at the Bulgarian Academy of Sciences (IMI—BAS) include the
study and application of knowledge-based methods for the creation, integration
and development of multimedia digital libraries with applications in cultural
heritage. This report presents IMI-BAS’s developments at the digital library
management systems and portals, i.e. the Bulgarian Iconographical Digital
Library, the Bulgarian Folklore Digital Library and the Bulgarian Folklore
Artery, etc. developed during the several national and international projects:
- "Digital Libraries with Multimedia Content and its Application in Bulgarian
Cultural Heritage" (contract 8/21.07.2005 between the IMI–BAS, and the
State Agency for Information Technologies and Communications;
- FP6/IST/P-027451 PROJECT LOGOS "Knowledge-on-Demand for
Ubiquitous Learning", EU FP6, IST, Priority 2.4.13 "Strengthening the
Integration of the ICT research effort in an Enlarged Europe"
- NSF project D-002-189 SINUS "Semantic Technologies for Web Services
and Technology Enhanced Learning".
- NSF project IO-03-03/2006 ―Development of Digital Libraries and
Information Portal with Virtual Exposition "Bulgarian Folklore
Heritage".
The presented prototypes aims to provide flexible and effective access to the
multimedia presentation of the cultural heritage artefacts and collections,
maintaining different forms and format of the digitized information content and
rich functionality for interaction. The developments are a result of long-
standing interests and work in the technological developments in information
systems, knowledge processing and content management systems. The current
research activities aims at creating innovative solutions for assembling
multimedia digital libraries for collaborative use in specific cultural heritage
context, maintaining their semantic interoperability and creating new services
for dynamic aggregation of their resources, access improvement,
personification, intelligent curation of content, and content protection. The
investigations are directed towards the development of distributed tools for
aggregating heterogeneous content and ensuring semantic compatibility with
the European digital library EUROPEANA, thus providing possibilities for pan-
European access to rich digitalised collections of Bulgarian cultural heritage
Using the Internet to improve university education
Up to this point, university education has largely remained unaffected by the developments of novel approaches to web-based learning. The paper presents a principled approach to the design of problem-oriented, web-based learning at the university level. The principles include providing authentic contexts with multimedia, supporting collaborative knowledge construction, making thinking visible with dynamic visualisation, quick access to content resources via information and communication technologies, and flexible support by tele-tutoring. These principles are used in the MUNICS learning environment, which is designed to support students of computer science to apply their factual knowledge from the lectures to complex real-world problems. For example, students may model the knowledge management in an educational organisation with a graphical simulation tool. Some more general findings from a formative evaluation study with the MUNICS prototype are reported and discussed. For example, the students' ignorance of the additional content resources is discussed in the light of the well-known finding of insufficient use of help systems in software applications
Hypermedia Learning Objects System - On the Way to a Semantic Educational Web
While eLearning systems become more and more popular in daily education,
available applications lack opportunities to structure, annotate and manage
their contents in a high-level fashion. General efforts to improve these
deficits are taken by initiatives to define rich meta data sets and a
semanticWeb layer. In the present paper we introduce Hylos, an online learning
system. Hylos is based on a cellular eLearning Object (ELO) information model
encapsulating meta data conforming to the LOM standard. Content management is
provisioned on this semantic meta data level and allows for variable,
dynamically adaptable access structures. Context aware multifunctional links
permit a systematic navigation depending on the learners and didactic needs,
thereby exploring the capabilities of the semantic web. Hylos is built upon the
more general Multimedia Information Repository (MIR) and the MIR adaptive
context linking environment (MIRaCLE), its linking extension. MIR is an open
system supporting the standards XML, Corba and JNDI. Hylos benefits from
manageable information structures, sophisticated access logic and high-level
authoring tools like the ELO editor responsible for the semi-manual creation of
meta data and WYSIWYG like content editing.Comment: 11 pages, 7 figure
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