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storage and retrieval Systems and Applications

ISBN: (纸本)0819402958

The conference proceedings incorporates 29 papers that are subdivided into six sessions. These deal with optical media technologies;recording system technologies;mass storage systems and applications;and small-systems applications and peripherals. Topics considered include: computer graphics, databases, the publishing industry, image storage, optical disks, medical imaging, medical records, image processing, law enforcement, criminal identification, digital memory, image storage and retrieval, video recording, telescopes, recording heads, and magnetooptical recording.

关键词： Data storage, Optical

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Automated semantic structure reconstruction and representation generation for broadcast news

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Proceedings of SPIE - The International Society for Optical Engineering 1999年 3656卷 50-62页

作者： Huang, Qian Liu, Zhu Rosenberg, Aaron AT&T Labs - Research Red Bank United States

This paper addresses the problem of recovering the semantic structure of broadcast news. A hierarchy of retrievable units is automatically constructed by integrating information from different media. The hierarchy provides a compact yet meaningful abstraction of the broadcast news data similar to a conventional table of content that can serve as an effective index table, facilitating the capability of browsing through large amounts of data in a non-linear fashion. The recovery of the semantic structure of the data further enables the automated solutions in constructing visual representations that are relevant to the semantics as well as in establishing useful relationships among data units such as topic categorization and content based multimedia hyperlinking. Preliminary experiments of integrating different media for hierarchical segmentation of semantics have yielded encouraging results. Some of the results are presented and discussed in this paper.

关键词： image reconstruction

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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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Incremental On-line Semantic Indexing for image retrieval in Dynamic databases

Incremental On-line Semantic Indexing for Image Retrieval in...

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IEEE-Computer-Society conference on Computer vision and Pattern Recognition Workshops

作者： Karthik, Suman Pulla, Chandrika Jawahar, C. v. Int Inst Informat Technol Hyderabad Ctr Visual Informat Technol Hyderabad 500032 Andhra Pradesh India

ISBN: (纸本)9781424439942

Contemporary approaches to semantic indexing for bag of words image retrieval do not adapt well when the image or video collections dynamically get modified. In this paper, We propose an on-line incremental semantic indexing scheme for image retrieval in dynamic image collections. Our main contributions are in the form of a method and a datastructure that tackle representation of the term document matrix and on-line semantic indexing where the database changes. We, introduce a bipartite graph model (BGM) which is a scalable datastructure. that aids in online semantic indexing. It con also be incrementally updated. BGM uses tf-idf values for building a semantic bipartite graph. lilt? also introduce a cash flow Algorithm that works on the BGM to retrieve semantically relevant images from the database. We examine the properties of both BGM and Cash Flow algorithm through a series of experiments. Finally, we demonstrate how they can he effectively implemented to build large scale image retrieval systems in an incremental manner.

关键词： image retrieval

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Evaluation of video sequence indexing and hierarchical video indexing

Evaluation of video sequence indexing and hierarchical video...

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storage and retrieval for image and video databases III

作者： Gargi, U. Oswald, S. Koshiba, D.A. Devadiga, Sadashiva Kasturi, Rangachar The Pennsylvania State Univ. University Park PA USA United States

ISBN: (纸本)081941767X

As a first step to creating a video database, a video sequence has to be segmented into several subsequences based on significant changes in the scene. This enables the media user to identify the whole or a part of the sequence and to retrieve scenes of interest from a large video database. Researchers in the past have used a histogram based inter-frame difference approach to identify significant scene changes. To determine which is the best color coordinate system for video indexing, we have evaluated the histogram based indexing method using different color coordinate systems - RGB, HSv, YIQ, L*a*b*, L*u*v* & Munsell - and compared the results for accuracy of indexing with reference to subjective indexing. Since it is difficult to determine the exact threshold value to obtain reasonably good results, we also propose a vide segmenting method called hierarchical histogram based indexing that segments a video sequence into several levels of subsequences using different levels of threshold.

关键词： video signal processing

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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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Automated semantic structure reconstruction and representation generation for broadcast news

Automated semantic structure reconstruction and representati...

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7th storage and retrieval for image and video databases conference

作者： Huang, Q Liu, Z Rosenberg, A AT&T Labs Res Red Bank NJ 07701 USA

ISBN: (纸本)0819431273

关键词： multimedia processing content based video indexing story segmentation

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