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7th storage and retrieval for image and video databases Conference

作者： Santini, S Gupta, A Jain, R Univ Calif San Diego Visual Comp Lab San Diego CA 92103 USA

ISBN: (纸本)0819431273

This paper introduces a model of spatio-temporal database that we are developing to query interesting events in video sequences. The database that we are designing is pushing the state of the art for a number of fields, and there are many issues that are still waiting a satisfactory solution. In this paper we present our (albeit still partial) answer to some of these problems, and the future directions of our work. Our design is divided in two layers: a Logbook which operates as a short time repository of unsummarized and unprocessed data, and a long term spatio-temporal database which stores and queries sumamrized data.

关键词： databases Data modeling Sensors video Data storage video surveillance 3D modeling Data processing Cameras Environmental sensing

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Multimedia systems for art and culture: A case study of Brihadisvara temple 5

Multimedia systems for art and culture: A case study of Brih...

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Conference on storage and retrieval for image and video databases V

作者： Jain, AK Goel, S Agarwal, S Mittal, V Sharma, H Mahindru, R Michigan State Univ. (United States) Indira Gandhi National Ctr. for the Arts (India)

ISBN: (纸本)0819424331

In India a temple is not only a structure of religious significance and celebration, but it also plays an important role in the social, administrative and cultural life of the locality. Temples have served as centers for learning Indian scriptures. Music and dance were fostered and performed in the precincts of the temples. Built at the end of the 10th century, the Brihadisvara temple signified new design methodologies. We have access to a large number of images, audio and video recordings, architectural drawings and scholarly publications of this temple. A multimedia system for this temple is being designed which is intended to be used for the following purposes: (i) to inform and enrich the general public, and (ii) to assist the scholars in their research. Such a system will also preserve and archive old historical documents and images. The large database consists primarily of images which can be retrieved using keywords, but the emphasis here is largely on techniques which will allow access using image content. Besides classifying images as either long shots or close-ups, deformable template matching is used for shape-based query by image content, and digital video retrieval. Further, to exploit the non-linear accessibility of video sequences, key frames are determined to aid the domain experts in getting a quick preview of the video. Our database also has images of several old, and rare manuscripts many of which are noisy and difficult to read. We have enhanced them to make them more legible. We are also investigating the optimal trade-off between image quality and compression ratios.

关键词： art and culture content-based retrieval deformable template image compression image enhancement video indexing shot boundary detection key frames

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SCALABLE video DATA PLACEMENT ON PARALLEL DISK ARRAYS 2

SCALABLE VIDEO DATA PLACEMENT ON PARALLEL DISK ARRAYS

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Conference on storage and retrieval for image and video databases II

作者： CHANG, E ZAKHOR, A UNIV CALIF BERKELEY BERKELEYCA 94720

ISBN: (纸本)0819414808

We present three strategies for placement of video data on parallel disk arrays. Using a low- level disk model and video data from a scalable subband coding technique, we derive constraints with which to compare the three strategies. One strategy, constant frame grouping, is shown to be superior. Two methods for interleaving multiple videos under the constant frame grouping strategy are presented: nonperiodic and periodic. Periodic interleaving is shown to have the advantages of a lower access time and limited scan and pause functions. The constant frame grouping strategy is tested on an actual array of 8 disks and shown to have performance that is close to the theoretical prediction. The scalable nature of the compressed data is used to relieve the disk system overload for an overly high request rate.

关键词： video Neodymium video compression Data modeling Scalable video coding Data storage Performance modeling Switching Scattering Televisions

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image descriptors based on fractal transform analysis

Image descriptors based on fractal transform analysis

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7th storage and retrieval for image and video databases Conference

作者： Demko, S Khosravi, M Chen, K Iterated Syst Inc Atlanta GA 30305 USA

ISBN: (纸本)0819431273

The Fractal Transform (FT) was originally introduced as a methodology for compressing digital images and representing them at different scales. The process of calculating an FT generates a great dear of information about the affine similarities and dissimilarities of an image, most of which is discarded in compression applications. In this paper we introduce the concept of Fractal Transform Analysis and use it to derive new image descriptors. We present results of experiments in which description schemes comprised of some of these FT-based descriptors are applied to the problems of finding objects in an image similar to a given object, of indexing images, and of querying an image database consisting of about 17,000 images. Complexity and timing data are also presented.

关键词： image databases content-based indexing and retrieval descriptor scheme image descriptor fractal transform

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Quicklook²:: An integrated multimedia system with learning capabilities

Quicklook<SUP>2</SUP>:: An integrated multimedia system with...

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Conference on storage and retrieval for Media databases 2001

作者： Ciocca, G Gagliardi, I Schettini, R CNR Ist Tecnol Informat Multimediali I-20131 Milan Italy

ISBN: (纸本)0819439932

The need to retrieve visual information from large image and video collections is shared by many application domains ([1, 11,) (13, 16)]. This paper describes the main features of Quicklook(2), a system that combines in a single framework the alphanumeric relational query, the content-based image query exploiting automatically computed low-level image features (such as color and texture), and the textual similarity query exploiting any textual annotations attached to image database items (such as figure captions or textual cards...).

关键词： image indexing image retrieval multimedia system content-based image analysis relevance feedback learning textual annotations

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DESIGN ISSUES FOR A DIGITAL X-RAY ARCHIVE ACCESSED OVER INTERNET 2

DESIGN ISSUES FOR A DIGITAL X-RAY ARCHIVE ACCESSED OVER INTE...

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Conference on storage and retrieval for image and video databases II

作者： THOMA, GR LONG, LR BERMAN, LE NATL LIB MED LISTER HILL NATL CTR BIOMED COMMUNBETHESDAMD 20894

ISBN: (纸本)0819414808

The design of an electronic archive of digitized images of thousands of xrays collected as part of nationwide health surveys has raised several issues related to user interface design, image presentation and image compression. The project involves developing an image archive implemented with an optical disk jukebox, and user workstations that allow Internet access to the images. This paper describes: the physical layout design of the workstation screens; desirable image processing functions contributing to better viewing and minimizing artifacts; interface design factors contributing to ease-of-use and speed of task completion; and work toward the selection of a suitable image compression technique.

关键词： image processing Internet Sun Human-machine interfaces image compression image segmentation Control systems Spine databases Visualization

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Content-Based retrieval of Digital video

Content-Based Retrieval of Digital Video

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作者： Faichney, Jolon Griffith University

学位级别：博士

In the next few years consumers will have access to large amounts of video and image data either created by themselves with digital video and still cameras or by having access to other image and video content electronically. Existing personal computer hardware and software has not been designed to manage large quantities of multimedia content. As a result, research in the area of content-based video retrieval (CBVR) has been underway for the last fifteen years. This research aims to improve CBVR by providing an accurate and reliable shape-colour representation and by providing a new 3D user interface called DomeWorld for the efficient browsing of large video databases. Existing feature extraction techniques designed for use in large databases are typically simple techniques as they must conform to the limited processing and storage constraints that are exhibited by large scale databases. Conversely, more complex feature extraction techniques provide higher- level descriptions of the underlying data but are time consuming and require large amounts of storage making them less useful for large databases. In this thesis a technique for medium to high- level shape representation is presented that exhibits efficient storage and query performance. The technique uses a very accurate contour detection system that incorporates a new asymmetry edge detector which is shown to perform better than other contour detection techniques combined with a new summarisation technique to efficiently store contours. In addition, contours are represented by histograms further reducing space requirements and increasing query performance. A new type of histogram is introduced called the fuzzy histogram and is applied to content-based retrieval systems for the first time. Fuzzy histograms improve the ranking of query results over non-fuzzy techniques especially in low bin-count histogram configurations. The fuzzy contour histogram approach is compared with an exhaustive contour comparison techn

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Automatic detection of salient objects and spatial relations in videos for a video database system

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image AND VISION COMPUTING 2008年第10期26卷 1384-1396页

作者： Sevilmis, Tarkan Bastan, Muhammet Gudukbay, Ugur Ulusoy, Oezguer Bilkent Univ Dept Comp Engn TR-06800 Ankara Turkey

Multimedia databases have gained popularity due to rapidly growing quantities of multimedia data and the need to perform efficient indexing, retrieval and analysis of this data. One downside of multimedia databases is the necessity to process the data for feature extraction and labeling prior to storage and querying. Huge amount of data makes it impossible to complete this task manually. We propose a toot for the automatic detection and tracking of salient objects, and derivation of spatio-temporal relations between them in video. Our system aims to reduce the work for manual selection and labeling of objects significantly by detecting and tracking the salient objects, and hence, requiring to enter the label for each object only once within each shot instead of specifying the labels for each object in every frame they appear. This is also required as a first step in a fully-automatic video database management system in which the labeling should also be done automatically. The proposed framework covers a scalable architecture for video processing and stages of shot boundary detection, salient object detection and tracking, and knowledge-base construction for effective spatio-temporal object querying. (c) 2008 Elsevier B.V. All rights reserved.

关键词： multimedia databases salient object detection and tracking camera focus estimation object labeling knowledge-base construction spatio-temporal queries

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storage HIERARCHY FOR video-ON-DEMAND SYSTEMS 2

STORAGE HIERARCHY FOR VIDEO-ON-DEMAND SYSTEMS

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Conference on storage and retrieval for image and video databases II

作者： SUZUKI, H NISHIMURA, K UEMORI, A SAKAMOTO, H NIPPON TELEGRAPH & TEL PUBL CORP HUMAN INTERFACE LABSMUSASHINOTOKYO 180JAPAN

ISBN: (纸本)0819414808

In this paper, we evaluate the performance of our trial hierarchical storage server by using simulation. Our system is composed of magnetic disk drives and an optical mass storage system (MSS). This is based on three key techniques: (1) multiple readout control using the time slot synchronous method, (2) quick access control of the MSS by using magnetic disk drives, (3) a storage hierarchy method for video programs that has three configurations. To verify the effectiveness of our storage hierarchy, we construct a queuing network simulation model of the system based on experimentally measured values, and analyze the average waiting time for each of the three configurations of video programs. Selecting the appropriate video program configuration shortens the average waiting time to half of previous times, with a quick access of less than 1 second, and with 8 simultaneous readouts. storage costs are reduced to about half that of magnetic disk drives only.

关键词： video Magnetism Optical discs Compact discs Local area networks Optical storage Telecommunications Control systems Data storage Interfaces

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image retrieval system based on interactive reduction of feature space

Image retrieval system based on interactive reduction of fea...

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7th storage and retrieval for image and video databases Conference

作者： Kobayashi, A Yoshida, T Sakai, Y Tokyo Inst Technol Fac Engn Tokyo 1528552 Japan

ISBN: (纸本)0819431273

This paper proposes an image retrieval system which searches a database for images similar to a target, imagined by a user. The system uses image features, rather than keywords, and retrieves images by reducing a multidimensional feature space generated by the image feature vectors. First, the system presents the user some sample images with a suitable feature vector value and requires the user's interaction to obtain information on which image is similar to the target he/she has in his/her mind. Then, the information is used to appropriately reduce the feature space. This process is continued until the target region is reduced to a suitable volume. Since this method requires neither real target image nor keywords in retrieving, it is quite simple and practical. Experimental results show the advantage and efficiency of the proposed system.

关键词： image database image retrieval feature space interactive retrieval

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