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Journal ArticleDOI

Digital video revisited

01 Jul 2003-Iete Technical Review (Taylor & Francis)-Vol. 20, Iss: 4, pp 309-318
TL;DR: A description of a system which can extract video object based representation of video sequences and builds up a video objectbased description of the content of the video collection is presented.
Abstract: In this paper, we focus on content based access and manipulation techniques for digital video. We review different techniques developed for extraction of contents of video using visual information. We then present description of a system which can extract video object based representation of video sequences and builds up a video object based description of the content of the video collection. We also present a brief review of another technology which provides for interactive manipulation of the video content through interaction with audio-visual objects like digital actors.
References
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Journal ArticleDOI
TL;DR: The Query by Image Content (QBIC) system as discussed by the authors allows queries on large image and video databases based on example images, user-constructed sketches and drawings, selected color and texture patterns, camera and object motion, and other graphical information.
Abstract: Research on ways to extend and improve query methods for image databases is widespread. We have developed the QBIC (Query by Image Content) system to explore content-based retrieval methods. QBIC allows queries on large image and video databases based on example images, user-constructed sketches and drawings, selected color and texture patterns, camera and object motion, and other graphical information. Two key properties of QBIC are (1) its use of image and video content-computable properties of color, texture, shape and motion of images, videos and their objects-in the queries, and (2) its graphical query language, in which queries are posed by drawing, selecting and other graphical means. This article describes the QBIC system and demonstrates its query capabilities. QBIC technology is part of several IBM products. >

3,957 citations

Proceedings ArticleDOI
01 Feb 1997
TL;DR: The VisualSEEk system is novel in that the user forms the queries by diagramming spatial arrangements of color regions by utilizing color information, region sizes and absolute and relative spatial locations.
Abstract: We describe a highly functional prototype system for searching by visual features in an image database. The VisualSEEk system is novel in that the user forms the queries by diagramming spatial arrangements of color regions. The system nds the images that contain the most similar arrangements of similar regions. Prior to the queries, the system automatically extracts and indexes salient color regions from the images. By utilizing e cient indexing techniques for color information, region sizes and absolute and relative spatial locations, a wide variety of complex joint color/spatial queries may be computed.

2,084 citations

Journal ArticleDOI
TL;DR: A twin-comparison approach has been developed to solve the problem of detecting transitions implemented by special effects, and a motion analysis algorithm is applied to determine whether an actual transition has occurred.
Abstract: Partitioning a video source into meaningful segments is an important step for video indexing. We present a comprehensive study of a partitioning system that detects segment boundaries. The system is based on a set of difference metrics and it measures the content changes between video frames. A twin-comparison approach has been developed to solve the problem of detecting transitions implemented by special effects. To eliminate the false interpretation of camera movements as transitions, a motion analysis algorithm is applied to determine whether an actual transition has occurred. A technique for determining the threshold for a difference metric and a multi-pass approach to improve the computation speed and accuracy have also been developed.

1,360 citations


"Digital video revisited" refers background in this paper

  • ...Many of the existing schemes for managing video data are based on this modeling framework [4-13]....

    [...]

Proceedings ArticleDOI
03 Jan 1998
TL;DR: This work systematically studied the features of: histograms in the Ohta color space; multiresolution, simultaneous autoregressive model parameters; and coefficients of a shift-invariant DCT to show how high-level scene properties can be inferred from classification of low-level image features.
Abstract: We show how high-level scene properties can be inferred from classification of low-level image features, specifically for the indoor-outdoor scene retrieval problem. We systematically studied the features of: histograms in the Ohta color space; multiresolution, simultaneous autoregressive model parameters; and coefficients of a shift-invariant DCT. We demonstrate that performance is improved by computing features on subblocks, classifying these subblocks, and then combining these results in a way reminiscent of stacking. State of the art single-feature methods are shown to result in about 75-86% performance, while the new method results in 90.3% correct classification, when evaluated on a diverse database of over 1300 consumer images provided by Kodak.

758 citations


"Digital video revisited" refers background in this paper

  • ...Szummer and Picard [23] suggested use of features computed on image sub-blocks for classification of images as indoor and outdoor scenes....

    [...]

Journal ArticleDOI
TL;DR: This work presents a high-level overview of the MPEG-7 standard, discussing the scope, basic terminology, and potential applications, and compares the relationship with other standards to highlight its capabilities.
Abstract: MPEG-7, formally known as the Multimedia Content Description Interface, includes standardized tools (descriptors, description schemes, and language) enabling structural, detailed descriptions of audio-visual information at different granularity levels (region, image, video segment, collection) and in different areas (content description, management, organization, navigation, and user interaction). It aims to support and facilitate a wide range of applications, such as media portals, content broadcasting, and ubiquitous multimedia. We present a high-level overview of the MPEG-7 standard. We first discuss the scope, basic terminology, and potential applications. Next, we discuss the constituent components. Then, we compare the relationship with other standards to highlight its capabilities.

734 citations