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检索条件"任意字段=Conference on Storage and Retrieval Methods and Applications for Multimedia 2005"

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Proceedings of SPIE-IS&T Electronic Imaging - storage and retrieval methods and applications for multimedia 2005

Proceedings of SPIE-IS&T Electronic Imaging - Storage and Re...

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Proceedings of SPIE-IS and T Electronic Imaging - storage and retrieval methods for multimedia 2005

The proceedings contain 34 papers from the Proceedings of SPIE&T Electronic Imaging - storage and retrieval methods and applications for multimedia 2005. The papers discussed include: the techniques and challenges of immutable storage with applications in multimedia;human identification using correlation metrics of iris images;3D shape descriptors and distance metrics for content-based artifact retrieval;collaborative visual tracking of multiple identical targets;efficiently querying spatial histograms;automated situation clustering of home photos for digital albuming;detection of goal events in soccer videos;and panoramic video in video-mediated education;and wipe shot boundary determination.

关键词： Content based retrieval

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The techniques and challenges of immutable storage with applications in multimedia

The techniques and challenges of immutable storage with appl...

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conference on storage and retrieval methods and applications for multimedia 2005

作者： Hasan, R Tucek, J Stanton, P Yurcik, W Brumbaugh, L Rosendale, J Boonstra, R Univ Illinois NCSA Urbana IL USA

ISBN: (纸本)0819456551

Security of storage and archival systems has become increasingly important in recent years. Due to the increased vulnerability of the existing systems and the need to comply with government regulations, different methods have been explored to create a secure storage system. One of the primary problems to ensuring the integrity of storage systems is to make sure a file cannot be changed without proper authorization. Immutable storage is storage whose content cannot be changed once it has been written. For example, it is apparent that critical system files and other important documents should never be changed and thus stored as immutable. In multimedia systems, immutability provides proper archival of indices as well as content. In this paper, a survey of existing techniques for immutability in file systems is presented.

关键词： immutability secure storage archival system WORM

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3-D shape descriptors and distance metrics for content-based artefact retrieval

3-D shape descriptors and distance metrics for content-based...

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conference on storage and retrieval methods and applications for multimedia 2005

作者： Goodall, S Lewis, P Martinez, K Univ Southampton Sch Elect & Comp Sci Southampton SO17 1BJ Hants England

ISBN: (纸本)0819456551

The growing number of large multimedia collections has led to an increased interest in content-based retrieval research. applications of content-based techniques to image retrieval is an active research area but much less work has been reported on content-based retrieval of 3-D objects in a multimedia database context. Increasingly such objects are being captured and added to multimedia collections and the European project, SCULPTEUR, is developing a museum information system which includes the introduction of facilities for content-based retrieval of the 3-D representations. This paper provides a comparison and evaluation of a range of 3-D shape descriptors and distance metrics which have been introduced into the SCULPTEUR project to demonstrate their use for content-based retrieval applications. Results show that while particular descriptors and distance metrics provide good overall performance, it can be more appropriate to choose different descriptors for different search tasks.

关键词： SCULPTUER content-based retrieval Princeton shape benchmark 3-D performance descriptor metric museum

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Tamper-resistant storage techniques for multimedia systems

Tamper-resistant storage techniques for multimedia systems

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conference on storage and retrieval methods and applications for multimedia 2005

作者： Haubert, E Tucek, J Brumbaugh, L Yurcik, W Univ Illinois Dept Comp Sci Urbana IL 61801 USA

ISBN: (纸本)0819456551

Tamper-resistant storage techniques provide varying degrees of authenticity and integrity for data. This paper surveys five implemented tamper-resistant storage systems that use encryption, cryptographic hashes, digital signatures and error-correction primitives to provide varying levels of data protection. Five key evaluation points for such systems are: (1) authenticity guarantees, (2) integrity guarantees, (3) confidentiality guarantees, (4) performance overhead attributed to security, and (5) scalability concerns. Immutable storage techniques can enhance tamper-resistant techniques. Digital watermarking is not appropriate for tamper-resistance implemented in the storage system rather than at the application level.

关键词： tamper-resistant tamper-proof storage multimedia authenticity integrity security reliability

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An efficient approach for video information retrieval

An efficient approach for video information retrieval

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conference on storage and retrieval methods and applications for multimedia 2005

作者： Dong, DG Xue, XY Fudan Univ Dept Comp Sci & Engn Shanghai 200433 Peoples R China

ISBN: (纸本)0819456551

Today, more and more video information can be accessed through internet, satellite, etc.. Retrieving specific video information from large-scale video database has become an important and challenging research topic in the area of multimedia information retrieval. In this paper, we introduce a new and efficient index structure OVA-File, which is a variant of VA-File. In OVA-File, the approximations close to each other in data space are stored in close positions of the approximation file. The benefit is that only a part of approximations close to the query vector need to be visited to get the query result. Both shot query algorithm and video clip algorithm are proposed to support video information retrieval efficiently. The experimental results showed that the queries based on OVA-File were much faster than that based on VA-File with small loss of result quality.

关键词： index structure multimedia information retrieval similarity query

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Protecting multimedia data in storage: A survey of techniques emphasizing encryption

Protecting multimedia data in storage: A survey of technique...

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conference on storage and retrieval methods and applications for multimedia 2005

作者： Stanton, P Yurcik, W Brumbaugh, L NCSA Champaign IL USA

ISBN: (纸本)0819456551

Protecting multimedia data from malicious computer users continues to grow in importance. Whether preventing unauthorized access to digital photographs, ensuring compliance with copyright regulations, or guaranteeing the integrity of a video teleconference, all multimedia applications require increased security in the presence of talented intruders. Specifically, as more and more files are preserved on disk the requirement to provide secure storage has become more important. This paper presents a survey of techniques for securely storing multimedia data, including theoretical approaches, prototype systems, and existing systems ready for employment. Due to the wide variety of potential solutions available, a prospective customer can easily become overwhelmed while researching an appropriate system for multimedia requirements. Since added security measures inevitably result in slower system performance, certain storage solutions provide a better fit for particular applications along a security/performance continuum. This paper provides an overview of the prominent characteristics of several systems to provide a foundation for selecting the most appropriate solution. Initially, the paper establishes a set of criteria for evaluating a storage solution based on confidentiality, integrity, availability, and performance. Then, using these criteria, the paper explains the relevant characteristics of select storage systems providing a comparison of the major differences. Finally, the paper examines specific applications of storage devices in the multimedia environment.

关键词： Computer security Data storage multimedia Databases Network security multimedia encryption Data centers Digital photography Information security Video

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Content-based image retrieval using a mobile device as a novel interface

Content-based image retrieval using a mobile device as a nov...

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conference on storage and retrieval methods and applications for multimedia 2005

作者： Hare, JS Lewis, PH Univ Southampton Intelligence Agents Multimedia Grp Sch Elect & Comp Sci Southampton SO17 1BJ Hants England

ISBN: (纸本)0819456551

This paper presents an investigation into the use of a mobile device as a novel interface to a content-based image retrieval system. The initial development has been based on the concept of using the mobile device in an art gallery for mining data about the exhibits, although a number of other applications are envisaged. The paper presents a novel methodology for performing content-based image retrieval and object recognition from query images that have been degraded by noise and subjected to transformations through the imaging system. The methodology uses techniques inspired from the information retrieval community in order to aid efficient indexing and retrieval. In particular, a vector-space model is used in the efficient indexing of each image, and a two-stage pruning/ranking procedure is used to determine the correct matching image. The retrieval algorithm is shown to outperform a number of existing algorithms when used with query images from the mobile device.

关键词： content-based image retrieval salient regions mobile device vector-space local Descriptors tf-idf

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Music genre classification via likelihood fusion from multiple feature models

Music genre classification via likelihood fusion from multip...

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conference on storage and retrieval methods and applications for multimedia 2005

作者： Shiu, Y Kuo, CCJ Univ So Calif Dept Elect Engn Los Angeles CA 90089 USA

ISBN: (纸本)0819456551

Music genre provides an efficient way to index songs in a music database, and can be used as an effective means to retrieval music of a similar type, i.e. content-based music retrieval. A new two-stage scheme for music genre classification is proposed in this work. At the first stage, we examine a couple of different features, construct their corresponding parametric models (e.g. GMM and HMM) and compute their likelihood functions to yield soft classification results. In particular, the timbre, rhythm and temporal variation features are considered. Then, at the second stage, these soft classification results are integrated to result in a hard decision for final music genre classification. Experimental results are given to demonstrate the performance of the proposed scheme.

关键词： music genre classification music information retrieval music database hidden Markov model pattern recognition

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Image retrieval using combination of color and multiresolution texture features

Image retrieval using combination of color and multiresoluti...

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conference on storage and retrieval methods and applications for multimedia 2005

作者： Chun, YD Sung, JK Kim, NC Kyungpook Natl Univ Dept Elect Engn Taegu 702701 South Korea

ISBN: (纸本)0819456551

We propose a content-based image retrieval (CBIR) method based on an efficient combination of a color feature and multiresolution texture features. As a color feature, a HSV autocorrelogram is chosen which is known to measure spatial correlation of colors well. As texture features, BDIP and BVLC moments are chosen which is known to measure local intensity variations well and measure local texture smoothness well, respectively. The texture features are obtained in a wavelet pyramid of the luminance component of a color image. The extracted features are combined for efficient similarity computation by the normalization depending on their dimensions and standard deviation vectors. Experimental results show that the proposed method yielded average 10% better performance in precision vs. recall and average 0.12 in average normalized modified retrieval rank (ANMRR) than the methods using color autocorrelogram, BDIP and BVLC moments, and wavelet moments, respectively.

关键词： content-based image retrieval multiresolution BDIP BVLC color autocorrelogram

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A relevance feedback image retrieval scheme using multi-instance and pseudo image concepts

A relevance feedback image retrieval scheme using multi-inst...

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conference on storage and retrieval methods and applications for multimedia 2005

作者： Chang, FC Hang, HM Natl Chiao Tung Univ Dept Elect Engn Hsinchu Taiwan

ISBN: (纸本)0819456551

Content-based image search has long been considered a difficult task. Making correct conjectures on the user intention (perception) based on the query images is a critical step in the content-based search. One key concept in this paper is how we find the user preferred image characteristics from the multiple positive samples provided by the user. The second key concept is that when the user does not provide a sufficient number of samples, how we generate a set of consistent "pseudo images". The notion of image feature stability is thus introduced. The third key concept is how we use negative images as pruning criterion. In realizing the preceding concepts, an image search scheme is developed using the weighted low-level image features. At the end, quantitative simulation results are used to show the effectiveness of these concepts.

关键词： image retrieval perception weighting

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