检索结果-内蒙古大学图书馆

2nd conference on Internet Imaging

作者： Iyengar, G IBM Corp Thomas J Watson Res Ctr Giridharan Iyengar Human Language Technol Yorktown Heights NY 10598 USA

ISBN: (纸本)0819439894

The focus of this paper is to facilitate access into an important class of multimedia content: 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.

关键词： content based retrieval

来源：评论

学校读者我要写书评

暂无评论

DISCOVER - A RESOURCE DISCOVERY SYSTEM BASED ON content ROUTING

COMPUTER NETWORKS AND ISDN SYSTEMS

引用

COMPUTER NETWORKS AND ISDN systems 1995年第6期27卷 953-972页

作者： SHELDON, MA DUDA, A WEISS, R GIFFORD, DK CNRS IMAGF-38610 GIERESFRANCE

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.

关键词： RETRIEVAL AND RESOURCE DISCOVERY content-BASED access DISTRIBUTED INFORMATION systems WAIS

来源：评论

学校读者我要写书评

暂无评论

End-to-end QoS through integrated management of content, networks and terminals: The ENTHRONE project

End-to-end QoS through integrated management of content, net...

引用

6th IEEE/ACS International conference on Computer systems and Applications (AICCSA-08)

作者： Negru, Olimpiu Thomson Grass Valley Cergy France

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 multimedia access (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.

关键词： Heterogeneous networks

来源：评论

学校读者我要写书评

暂无评论

Dual watermarking framework for privacy protection and content authentication of multimedia

引用

FUTURE GENERATION COMPUTER systems-THE INTERNATIONAL JOURNAL OF ESCIENCE 2019年 94卷 654-673页

作者： Hurrah, Nasir N. Parah, Shabir A. Loan, Nazir A. Sheikh, Javaid A. Elhoseny, Mohammad Muhammad, Khan Univ Kashmir Post Grad Dept Elect & Instrumentat Technol Srinagar 190006 Jammu & Kashmir India Mansoura Univ Fac Comp & Informat El Gomhouria St Mansoura 35516 Egypt Sejong Univ Digital Contents Res Inst Intelligent Media Lab Seoul South Korea

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.

关键词： multimedia security Cyber-attack Cybersecurity Robustness Copyright protection content authentication

来源：评论

学校读者我要写书评

暂无评论

Metadatabase and search agent for multimedia database access over Internet

Metadatabase and search agent for multimedia database access...

引用

Proceedings of the 1997 IEEE International conference on multimedia Computing and systems, ICMCS

作者： Chang, Wendy Murthy, Deepak Zhang, Aidong Syeda-Mahmood, Tanveer Fathima State Univ of New York at Buffalo Buffalo United States

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.

关键词： Distributed database systems

来源：评论

学校读者我要写书评

暂无评论

Distributed resource allocation for DS-CDMA-based multimedia ad hoc wireless LAN's

引用

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 1999年第5期17卷 947-967页

作者： Lal, S Sousa, ES Lucent Technol Adv Interworking Syst Grp Holmdel NJ 07733 USA Univ Toronto Dept Elect & Comp Engn Toronto ON M55 3G4 Canada

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.

关键词： code division multiaccess pseudonoise coded communication resource management wireless LAN

来源：评论

学校读者我要写书评

暂无评论

A Robust DRM System on the DVB multimedia Home Platform

A Robust DRM System on the DVB Multimedia Home Platform

引用

3rd IEEE Consumer Communications and Networking conference

作者： Liang, Chia-Kai Liu, Chia-Chu Chen, Homer H. Natl Taiwan Univ Grad Inst Commun Engn Taipei Taiwan

ISBN: (纸本)9781424400850

In a digital home, the copy rights of the high-quality multimedia content 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.

关键词： multimedia systems

来源：评论

学校读者我要写书评

暂无评论

content: A practical, scalable, high-performance multimedia database

CONTENT: A practical, scalable, high-performance multimedia ...

引用

2nd ACM International conference on Digital Libraries (DL 97)

作者： Yapp, L Yamashita, C Zick, G UNIV WASHINGTON DEPT ELECT ENGNSEATTLEWA 98195

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.

关键词： Database systems

来源：评论

学校读者我要写书评

暂无评论

Conditional access in mobile systems: Securing the application

Conditional access in mobile systems: Securing the applicati...

引用

1st International conference on Distributed Frameworks for multimedia Applications (DFMA)

作者： Gallery, E Tomlinson, A Univ London Royal Holloway & Bedford New Coll Informat Secur Grp Mobile VCE Res Grp Egham TW20 0EX Surrey England

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.

关键词： Mobile telecommunication systems

来源：评论

学校读者我要写书评

暂无评论

Metadata-based access to multimedia architectural and historical archive collections

Metadata-based access to multimedia architectural and histor...

引用

Internet multimedia Management systems III conference

作者： Bekaert, J Van De Ville, D Rogge, B Lerouge, S De Sutter, R De Kooning, E Van de Walle, R State Univ Ghent Dept Elect & Informat Syst ELIS Multimedia Lab B-9000 Ghent Belgium

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 multimedia content description standard.

关键词： multimedia archival collections metadata METS MPEG-7

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：