作者:
Iyengar, GIBM Corp
Thomas J Watson Res Ctr Giridharan Iyengar Human Language Technol Yorktown Heights NY 10598 USA
The focus of this paper is to facilitate access into an important class of multimediacontent: unscripted and causally shot home videos. Unlike scripted video (such as movies and commercials), video that has been shot...
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ISBN:
(纸本)0819439894
The focus of this paper is to facilitate access into an important class of multimediacontent: unscripted and causally shot home videos. Unlike scripted video (such as movies and commercials), video that has been shot for the simple purpose of recording an event or place has no structure to facilitate its access. Our approach to tackling the unstructured video problem is to use clustering techniques to create multiple groupings of the video. We describe two clustering algorithms in this paper, which assume fairly general probability density descriptions of video. In addition, we describe an application built upon these clustering algorithms that enables browsing and rescripting unstructred content.
We have built an HTTP based resource discovery system called Discover that provides a single point of access to over 500 WAIS servers. Discover provides two key services: query refinement and query routing. Query refi...
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We have built an HTTP based resource discovery system called Discover that provides a single point of access to over 500 WAIS servers. Discover provides two key services: query refinement and query routing. Query refinement helps a user improve a query fragment to describe the user's interests more precisely. Once a query has been refined and describes a manageable result set, query routing automatically forwards the query to the WAIS servers that contain relevant documents. Abbreviated descriptions of WAIS sites called content labels are used by the query refinement and query routing algorithms. Our experimental results suggest that query refinement in conjunction with the query routing provides an effective way to discover resources in a large universe of documents. Our experience with query refinement has convinced us that the expansion of query fragments is essential in helping one use a large, dynamically changing, heterogenous distributed information system.
The EATHRONE project proposes an integrated management solution that covers the entire audiovisual service distribution chain, including protected content handling, distribution across networks and reception at user t...
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ISBN:
(纸本)9781424419678
The EATHRONE project proposes an integrated management solution that covers the entire audiovisual service distribution chain, including protected content handling, distribution across networks and reception at user terminals. The aim is not to unify or impose a strategy on each individual entity of the chain, bid to harmonise their functionality, in order to support an end-to-end Quality of Service (QoS) architecture over heterogeneous networks, applied to a variety of audio-visual services that are delivered to various user terminals. To meet its objectives, the project is relying on an efficient, distributed and open management architecture for the end-to-end delivery chain The MPEG-21 data model is used to provide the common support for implementing and managing the resources functionalities. Furthermore, the MPEG-21 framework implementation in the project will contribute to the realisation of Universal multimediaaccess (UMA), which aims at achieving interoperable transparent access to multimedia resources from any type of client terminal or network and so, the rapid growing for online exchange of rich media resources.
In the current multimedia networked infrastructure, privacy breaches due to cyber-attacks result in huge economic losses. Despite these threats there is ever increasing demand to share data over various insecure netwo...
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In the current multimedia networked infrastructure, privacy breaches due to cyber-attacks result in huge economic losses. Despite these threats there is ever increasing demand to share data over various insecure networks for accomplishment of numerous tasks. In such a scenario there is a greater need to develop new algorithms for strengthening the existing cybersecurity frameworks, ensure security, privacy, copyright protection and authentication of data. In this paper a new technique for copyright protection, data security and content authentication of multimedia images is presented. The copyright protection of the media is taken care of by embedding a robust watermark using an efficient inter-block coefficient differencing algorithm and is proposed as Scheme I. Scheme II has been utilized to ensure both copyright protection, and content authentication. The authentication of the content has been ensured by embedding a fragile watermark in spatial domain while as copyright protection has been taken care of utilizing a robust watermark. In order to thwart an adversary and ensure that it has no access to actual embedded data, we make use of a novel encryption algorithm in conjunction with Arnold transform to encrypt data prior to its embedding. The experimental results reveal that the proposed framework offers high degree of robustness against single/dual/triple attacks;with Normalized Correlation (NCC), more than or equal to 0.95. Besides, the fragile watermark embedding makes the system capable of tamper detection and localization with average BER more than 45% for all signal processing/geometric attacks. The average PSNR achieved for both schemes is greater than 41 dB. A comparison of the proposed framework with various state-of-the-art techniques demonstrate its effectiveness and superiority. (C) 2018 Elsevier B.V. All rights reserved.
In this paper, we investigate approaches to the creations of a metadatabase and a search agent in a metaserver which support global visual access to multimedia databases over Internet. The metadata for inclusion withi...
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In this paper, we investigate approaches to the creations of a metadatabase and a search agent in a metaserver which support global visual access to multimedia databases over Internet. The metadata for inclusion within the metadatabase is formulated on the basis of visual content of the images housed at each remote multimedia database. The search agent, located within the metaserver, accesses the metadatabase and derives a ranking of database sites for the distribution of user queries. The proposed metadatabase and search agent are implemented in a web-based multimedia information retrieval environment.
Power control in direct sequence-coded vision multiple access (DS-CDMA) systems and, more recently, power/rate allocation in multirate DS-CDMA based networks is an open and interesting research area which has attracte...
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Power control in direct sequence-coded vision multiple access (DS-CDMA) systems and, more recently, power/rate allocation in multirate DS-CDMA based networks is an open and interesting research area which has attracted much attention. However, with a few exceptions, most researchers have emphasized centralized resource allocation algorithms for cellular systems where the base station keeps track of the requirements of the various users and is thus responsible for the management of network resources. Ad hoc wireless local area networks (WLAN's), on the other hand, are generally configured as peer-to-peer networks with no centralized hub or controller. Thus resource allocation has to be conducted in a distributed fashion. We address the issue of distributed resource management for multirate DS-CDMA based multimedia WLAN's by 1) presenting a distributed resource allocation protocol, known as distributed resource negotiation protocol (DRNP) that builds on the RTS/CTS bandwidth reservation mechanism provided by IEEE 802.111, and provides quality of service (QoS) guarantees through distributed control of resources in DS-CDMA based multimedia WLAN's and 2) investigating the performance of various resource allocation schemes within the context of DRNP, in terms of network wide metrics such as overall throughput and blocking rates.
In a digital home, the copy rights of the high-quality multimediacontent broadcasted from a DVB system need to be protected. However, there is no specification on how to enforce the usage rights of digital content in...
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ISBN:
(纸本)9781424400850
In a digital home, the copy rights of the high-quality multimediacontent broadcasted from a DVB system need to be protected. However, there is no specification on how to enforce the usage rights of digital content in the DVB standards. As a result, even if the digital content is protected under the conditional access sub-system, end users can still copy and redistribute the digital content once it is descrambled In this paper, we proposed a DRM system for set-top box which supports multimedia Home Platform middleware. The rights of the protected digital content are described using the MPEG-21 Rights Expression Language and broadcasted with the digital content. In the proposed system, the rights are stored in the smart card. The proposed system is highly renewable and extensible. The service providers can integrate this system with their existing broadcast services without additional hardware cost.
This paper describes content, a practical, scalable, and high performance text-indexed multimedia database system. The novelty of content is in its approach of integrating high-volume storage, fast searching and brows...
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ISBN:
(纸本)0897918681
This paper describes content, a practical, scalable, and high performance text-indexed multimedia database system. The novelty of content is in its approach of integrating high-volume storage, fast searching and browsing, easy multimedia acquisition, effective updates, scalability, extendibility, and an API based on HTTP. content is also a low-cost solution for large multimedia databases that is available today. Standard Web-based browsers such as Netscape can query the content server. The API is flexible so that different and unique content clients on multiple platforms can be built to access multiple content servers. The content architecture permits any multimedia type to be stored. Text descriptions are used as indices for images and videos. content includes an easy-to-use Windows-based acquisition station for acquiring images and video. Currently, content is being used in a real library setting and contains more than 25,000 multimedia objects that span two different collections of valuable historical photographs. In terms of performance, content can access a single image in a database of over one million images in less than a second.
This paper describes two protocols for the secure download of content protection software to mobile devices. The protocols apply concepts from trusted computing to demonstrate that a platform is in a sufficiently trus...
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ISBN:
(纸本)0769522734
This paper describes two protocols for the secure download of content protection software to mobile devices. The protocols apply concepts from trusted computing to demonstrate that a platform is in a sufficiently trustworthy state before any application or associated keys are securely downloaded The protocols are designed to allow mobile devices to receive broadcast content protected by proprietary conditional access applications. They may also be applied in the general case where demonstration of a secure execution environment is required before an application is downloaded.
A comprehensive approach to the access of archival collections necessitates the interplay of various types of metadata standards. Each of these standards fulfills its own part within the context of a 'metadata inf...
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ISBN:
(纸本)0819446416
A comprehensive approach to the access of archival collections necessitates the interplay of various types of metadata standards. Each of these standards fulfills its own part within the context of a 'metadata infrastructure'. Besides this, it should be noted that present-day digital libraries are often limited to the management of mainly textual and image-based material. Archival Information systems dealing with various media types are still very rare. There is a need for a methodology to deal with time-dependant media within an archival context. The aim of our research is to investigate and implement a number of tools supporting the content management multimedia data within digital collections. A flexible and extendible framework is proposed, based on the emerging Metadata Encoding and Transmission Standard (METS). Firstly, we will focus on the description of archival collections according to the archival mandates of provenance for the benefit of an art-historical research in an archive-theoretic ally correct manner. Secondly, we will examine the description tools that represent the semantics and structure of multimedia data. In this respect, an extension of the present archival metadata framework has been proposed to time-based media content delivered via standards such as the MPEG-7 multimediacontent description standard.
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