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检索条件"任意字段=Conference on Storage and Retrieval for Image and Video Databases III"

共 344 条记录，以下是211-220 订阅

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Object-oriented multimedia database system with versioning and content-based retrieval

Object-oriented multimedia database system with versioning a...

引用

storage and retrieval for image and video databases iii

作者： Arndt, Timothy Guercio, Angela Univ. di Salerno Baronissi Italy

ISBN: (纸本)081941767X

A prototype object-oriented multimedia database management system currently being developed is described. The system supports the storage and retrieval of images, video, audio and documents composed of these types. The major features of the system include: (1) content-based indexes for each of the data types, (2) an intuitive user-oriented query language based on these indexes, (3) manual, semi-automatic and automatic indexing modes, (4) object-based user data models incorporated in query processing, (5) image/audio/video processing incorporated in the system, (6) versioning of objects, (7) browsing and navigation facilities. The indexes are interval-based and describe spatio-temporal relations between pairs of objects in the respective media. The query processing mechanism is described, as is the object-oriented data modeling facility. The most innovative aspects of this work are the following: (1) extension of iconic indexing of images to the audio and video data types, (2) an embedding of content-based iconic indexing in a multimedia database management system with particular emphasis on user-oriented indexing and querying, (3) the use of an object-oriented data model to alleviate the aliasing problem in query formation, (4) versioning of images/audio/video to save storage space.

关键词： Database systems

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Distributed data collection for a database of radiological image interpretations 5

Distributed data collection for a database of radiological i...

引用

conference on storage and retrieval for image and video databases V

作者： Long, LR Ostchega, Y Goh, GH Thoma, GR National Library of Medicine (United States) National Ctr. for Health Statistics (United States) Century Computing (United States)

ISBN: (纸本)0819424331

The National Library of Medicine, in collaboration with the National Center for Health Statistics and the National Institute for Arthritis and Musculoskeletal and Skin Diseases, has built a system for collecting radiological interpretations for a large set of x-ray images acquired as part of the data gathered in the second National Health and Nutrition Examination Survey. This system is capable of delivering across the Internet 5- and 10-megabyte x-ray images to Sun workstations equipped with X Window based 2048x2560 image displays, for the purpose of having these images interpreted for the degree of presence of particular osteoarthritic conditions in the cervical and lumbar spines. The collected interpretations can then be stored in a database at the National Library of Medicine, under control of the Illustra DBMS. This system is a client/server database application which integrates (1) distributed server processing of client requests, (2) a customized image transmission method for faster Internet data delivery, (3) distributed client workstations with high resolution displays, image processing functions and an on-line digital atlas, and (4) relational database management of the collected data.

关键词： radiographs digital xray client/server National Library of Medicine DBMS Internet DBMS

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Vector angular distance measure for indexing and retrieval of color

Vector angular distance measure for indexing and retrieval o...

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7th storage and retrieval for image and video databases conference

作者： Androutsos, D Plataniotis, KN Venetsanopoulos, AN Univ Toronto Dept Elect & Comp Engn Digital Signal & Image Proc Lab Toronto ON M5S 3G4 Canada

ISBN: (纸本)0819431273

A key aspect of image retrieval using color, is the creation of robust and efficient indices. In particular, the color histogram remains the most popular index, due primarily to its simplicity. However, the color histogram has a number of drawbacks. Specifically histograms capture only global activity, they require quantisation to reduce dimensionality, are highly dependent on the chosen color space, have no means to exclude a certain color from a query and can provide erroneous results due to gamma nonlinearity. In this paper we present a vector angular distance measure which is implemented as part of our database system. Our system does away with histogram techniques for color indexing and retrieval and instead implements color vector techniques. We use color segmentation to extract regions of prominent color and use representative vectors from these extracted regions in the image indices. This way we end up with a much smaller index which does not have the granularity of a histogram. Instead similarity is based on our vector angular distance measure between a query color vector and the indexed representative vectors.

关键词： color vectors angular measure color exclusion gamma nonlinearity

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Ordinal measure of DCT coefficients for image correspondence and its application to copy detection

Ordinal measure of DCT coefficients for image correspondence...

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conference on storage and retrieval for Media databases 2003

作者： Kim, C Epson Palo Alto Lab Palo Alto CA 94304 USA

ISBN: (纸本)0819448214

Detecting unauthorized copies of digital media (images, audio and video) is a basic requirement for Intellectual Property Right (IPR) protection. This paper proposes a novel method to detect copies of digital images. This copy detection scheme can be used as either an alternative approach or a complementary approach to watermarking. A test image is first reduced to 8x8 sub-image by intensity averaging, and then, the AC coefficients of its discrete cosine transform (DCT) are used to compute distance from those generated from the query image, of which a user wants to find copies. A challenge arises when copies are processed to avoid copy detection or enhance image quality. We show the ordinal measure of DCT coefficients, which is based on relative ordering of AC magnitude values and using distance metrics between two rank permutations, are robust to various modifications of the original image. The optimal threshold selection scheme using the maximum a posteriori (MAP) criterion is also addressed. Through simulations on the database of 40,000 images we show the effectiveness of the proposed system.

关键词： image copy detection copyright protection ordinal measure maximum a posteriori (MAP) criterion

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video and image databases: who cares?

Video and image databases: who cares?

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Proceedings of the 1999 7th conference of the storage and retrieval for image and video databases VII

作者： Delp, Edward J. Purdue Univ West Lafayette IN United States

The aim of this report is to be controversial and to engage a debate within the research community. Issues of whether some of the work in image and video databases has been directed at solutions in search of a problem are discussed. Important applications in the area of media-based digital libraries that will enhance human experience are also detailed.

关键词： Database systems

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An Exhaustive Study on Data Mining Techniques in Mining of Multimedia Database

An Exhaustive Study on Data Mining Techniques in Mining of M...

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International conference on Issues and Challenges in Intelligent Computing Techniques (ICICT)

作者： Yadav, Pramod Kumar Rizvi, S. A. M. Krishna Inst Engn & Technol Dept Comp Sci & Engn Ghaziabad India Jamia Millia Islamia Dept Comp Sci New Delhi India

ISBN: (纸本)9781479928996

Multimedia database can be define as a collection of storage and retrieval systems, in which large amount of media objects are created, modified, searched and retrieved, where as Multimedia is the combination of text, image, graphics, animations, audio and video. The extension of database application to handle multimedia objects requires synchronization of multiple media data streams. Multimedia data mining refers to the extraction of implicit knowledge, data relationships, or other patterns which are not stored in multimedia files explicitly. The system's overall performance in retrieval can be increase by indexing and classification of multimedia data with efficient information fusion of the different modalities is mandatory. Apart from text retrieval, the current waves in web searching and multimedia data retrieval are the search for and delivery of 3D scenes, images, music and video. The content-based multimedia information retrieval provides new techniques and methods for searching various multimedia databases over the world.

关键词： Query Optimization Spatial data mining web mining Text Mining image Mining Audio and video Mining Map Reduce

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Fixed-window image descriptors for image retrieval

Fixed-window image descriptors for image retrieval

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storage and retrieval for image and video databases iii

作者： Guibas, Leonidas J. Rogoff, B. Tomasi, Carlo Stanford Univ. Stanford CA USA

ISBN: (纸本)081941767X

We work towards a content-based image retrieval system, where queries can be image-like objects. At entry time, each image is processed to yield a large number of indices into its windows. A window is a square in a fixed quad-tree decomposition of the image, and an index is a fixed-size vector, called a descriptor, similar to the periodograms used in spectral estimation. The fixed decomposition of images was prompted by the need for fast processing, but leads to windows that often straddle image regions with different textural contents, making indices less effective. In this paper, we investigate different definitions of spectral distance which we plan to use to classify windows according to their texture content.

关键词： Information retrieval systems

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Local structural association for retrieval and recognition of signature images

Local structural association for retrieval and recognition o...

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storage and retrieval for image and video databases iii

作者： Sethi, Ishwar K. Han, Ke Wayne State Univ. Detroit MI USA

ISBN: (纸本)081941767X

Many applications require similarity retrieval of an image from a large collection of images. In such cases, image indexing becomes important for efficient organization and retrieval of images. This paper addresses this issue in the context of a database of signature images and describes a system for similarity retrieval and recognition of signature images. The proposed system uses a set of geometric and topological features to map a signature image into two strings of finite symbols. A local associative indexing scheme is then used on the strings to organize and search the signature database. The advantage of the local associative indexing is that it is tolerant of missing features and allows queries even with partial signatures. The performance of the system has been tested with promising results with a signature database of 120 signatures.

关键词： Information retrieval systems

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Automatic soccer video analysis and summarization

Automatic soccer video analysis and summarization

引用

conference on storage and retrieval for Media databases 2003

作者： Ekin, A Tekalp, AM Univ Rochester Dept Elect & Comp Engn Rochester NY 14627 USA

ISBN: (纸本)0819448214

We propose a fully automatic and computationally efficient framework for analysis and summarization of soccer videos using cinematic and object-based features. The proposed framework includes some novel low-level soccer video processing algorithms, such as dominant color region detection, robust shot boundary detection, and shot classification, as well as some higher-level algorithms for goal detection, referee detection, and penalty-box detection. The system can output three types of summaries: i) all slow-motion segments in a game, ii) all goals in a game, and iii) slow-motion segments classified according to object-based features. The first two types of summaries are based on cinematic features only for speedy processing, while the summaries of the last type contain higher-level semantics. The proposed framework is efficient, effective, and robust for soccer video processing. It is efficient in the sense that there is no need to compute object-based features when cinematic features are sufficient for the detection of certain events, e.g. goals in soccer. It is effective in the sense that the framework can also employ object-based features when needed to increase accuracy (at the expense of more computation). The efficiency, effectiveness, and the robustness of the proposed framework are demonstrated over a large data set, consisting of more than 13 hours of soccer video, captured at different countries and conditions.

关键词： soccer video processing cinematic features object-based features shot classification slow-motion replay detection semantic event detection soccer video summarization

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Wide-area-distributed storage system for multimedia database

Wide-area-distributed storage system for multimedia database

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7th storage and retrieval for image and video databases conference

作者： Ueno, M Kinoshita, S Kuriki, M Murata, S Iwatsu, S NTT Integrated Informat & Energy Syst Labs Musashino Tokyo 1808585 Japan

ISBN: (纸本)0819431273

We have developed a wide-area-distributed storage system for multimedia databases that minimizes the possibility of simultaneous failure of multiple disks in the event of a major disaster. It features a RAID system whose member disks are spatially distributed over a wide area Each node has a device that includes the controller of the RAID and the controller of the member disks controlled by other nodes. The devices in the node are connected to a computer using fiber optic cables and communicate using Fibre-Channel technology. Any computer at a node can utilize multiple devices connected by optical fibers as a single "virtual disk". The advantage of this system structure is that devices and fiber optic cables are shared by the computers. In this report, we first describe our proposed system and a prototype we used for testing, Then we discuss its performance, i.e., how the read and write throughputs are affected by data-access delay, the RAID level, and queuing.

关键词： distributed system disaster-tolerant multimedia database system RAID fibre-channel wide distribution storage system file system

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