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Digital and Computational Video, 2001. Proceedings. Second International Workshop on

Date 8-9 Feb. 2001

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Displaying Results 1 - 25 of 28
  • Proceedings Second International Workshop on Digital and Computational Video

    Publication Year: 2001
    Request permission for commercial reuse | PDF file iconPDF (178 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 2001, Page(s): 209
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    Freely Available from IEEE
  • High definition television broadcast technology-a NIST/ATP project

    Publication Year: 2001, Page(s):13 - 20
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB) | HTML iconHTML

    In September 2000, a 5-year research project to develop a high-definition compressed digital studio was completed. The project was a joint venture led by Sarnoff Corporation with IBM, Thomcast, NJN, Thomson, MCI, Sun Microsystems and Philips, and co-funded by the National Institute of Standards and Technology (NIST). This paper provides an overview of the goals and accomplishments of the high-defi... View full abstract»

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  • A new methodology for implementing interactive operations of MPEG-2 compressed video

    Publication Year: 2001, Page(s):21 - 28
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB) | HTML iconHTML

    We present an efficient approach for supporting interactive operations such as fast forward (FF) and fast rewind (FR) in MPEG-based interactive video on demand (IVoD) system. This approach is based on transmitting additional data of the same movie from the server to the digital storage device (DSD) at a client station. The special additional data consists of an elementary stream (ES) which has all... View full abstract»

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  • Remnant error concealment technique for error recovery

    Publication Year: 2001, Page(s):180 - 186
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB) | HTML iconHTML

    This paper presents a remnant error concealment (REC) technique based on generic error concealment (GEC). Two most common issues in video error recovery systems are the locations of lost blocks and error recovery techniques. By using a multistage error detection algorithm to obtain the location of lost blocks of random bit error in the MPEG-2 bit stream, the REC technique uses the spatial neighbor... View full abstract»

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  • Cost modeling for early image processing applications

    Publication Year: 2001, Page(s):29 - 34
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB) | HTML iconHTML

    This paper describes a method to evaluate image applications mapped to a focal plane processing array with a single pixel per processing element. An application is specified and compiled to a common instruction set architecture. The application is then simulated to create a dynamic workload. A design space of possible execution machines is compiled using predicted performances and costs for comput... View full abstract»

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  • Broadband data delivery over television networks

    Publication Year: 2001, Page(s):36 - 43
    Cited by:  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB) | HTML iconHTML

    A new medium (data over TV) is getting ready for much more than prime time. This hybrid springs from broadcasting and the Internet, drawing on the one-to-many capability of broadcasting and the one-to-one intimacy of the Web. Its evolution will be based on data services carried on both analog and digital television channels, where television broadcasters see business opportunities in sharing their... View full abstract»

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  • A hybrid wavelet compression scheme for material textures

    Publication Year: 2001, Page(s):187 - 193
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1296 KB) | HTML iconHTML

    We present a novel compression scheme based on wavelets for compressing material textures and terrain data. Our new hybrid technique is efficient, attractive and appropriate for material textures as demonstrated by the results. Further, the proposed scheme, which is amenable to real time implementation, is found to be superior to the existing state-of-art hardware-based compression schemes such as... View full abstract»

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  • Feedback from video for virtual reality navigation

    Publication Year: 2001, Page(s):158 - 163
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB) | HTML iconHTML

    Important preconditions for wide acceptance of virtual reality systems include their comfort, ease and naturalness to use. Most existing trackers suffer from discomfort related issues. For example, body-based trackers (such as hand controllers, joysticks or helmet attachments) restrict spontaneity and naturalness of motion, whereas ground-based devices (e.g., hand controllers) limit the workspace ... View full abstract»

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  • An efficient low-bit rate adaptive mesh-based motion compensation technique

    Publication Year: 2001, Page(s):164 - 172
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB) | HTML iconHTML

    This paper proposes a two-stage global motion estimation method using a novel quadtree block-based motion estimation technique and an active mesh model. In the first stage, motion parameters are estimated by fitting block-based motion vectors computed using a new efficient quadtree technique, that divides a frame into equilateral triangle blocks using the quadtree structure. Arbitrary partition sh... View full abstract»

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  • Facial expression recognition approach for performance animation

    Publication Year: 2001, Page(s):132 - 139
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB) | HTML iconHTML

    We attempt a performance animation approach that makes use of a facial expression recognition technique. Our approach consists of two steps. First, we identify the performer's facial expressions from the input image sequence, using a method that is modified from the well-known eigenface method but here not for recognizing a face but for recognizing expression. Second, we use the recognition result... View full abstract»

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  • MPEG-4 authoring tool for the composition of 3D audiovisual scenes

    Publication Year: 2001, Page(s):110 - 117
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB) | HTML iconHTML

    Bringing much new functionality, MPEG-4 offers numerous capabilities and is expected to be the future standard for multimedia applications. In this paper, a novel authoring tool, fully exploiting the 3D functionalities of the MPEG-4 standard, is described. It is based upon an open and modular architecture able to progress with MPEG-4 versions and it is easily adaptable to newly emerging better and... View full abstract»

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  • Dynamically parameterized architectures for power-aware video coding: motion estimation and DCT

    Publication Year: 2001, Page(s):4 - 12
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (556 KB) | HTML iconHTML

    Power-aware video coding requires a combination of high-performance and flexibility to satisfy perceptual quality requirements and meet low-power constraints. This work explores the use of dynamically configurable algorithms and architectures which leverage two fundamental properties of video processing: 1. Video content and its associated processing are highly non-uniform in both space and time. ... View full abstract»

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  • Active appearance motion model segmentation

    Publication Year: 2001, Page(s):64 - 68
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    An adaptive method for temporal sequence segmentation was developed and its performance assessed in the segmentation of cardiac motion image sequences. The primary contribution of this paper is the development of a novel, 2D+time active appearance motion model (AAMM) that represents the dynamics of the cardiac cycle in combination with the shape and image appearance of the heart. Cootes' 2D active... View full abstract»

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  • Mosaic construction from image stream with parallax

    Publication Year: 2001, Page(s):86 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB) | HTML iconHTML

    We introduce a framework that is capable of reconstructing a mosaic from an image stream that contains parallax. As a non-planar, non-distant scene is pictured under general camera motion, parallax is present in the image data. Constructing a mosaic from such data is difficult because the global parametric transformation that allows one image to be registered with another is lacking. In an earlier... View full abstract»

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  • Digital watermarking of MPEG-1 and MPEG-2 multiplexed streams for copyright protection

    Publication Year: 2001, Page(s):140 - 147
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    A new technique for watermarking of MPEG-1/2 compressed video streams is proposed. The watermarking scheme operates directly in the domain of MPEG-1/2 program streams. Perceptual models are used during the embedding process in order to preserve the quality of the video. The detection of the watermark is performed in the compressed domain without requiring the original video. The resulting watermar... View full abstract»

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  • Efficient 3D wavelet transform decomposition for video compression

    Publication Year: 2001, Page(s):118 - 125
    Cited by:  Papers (6)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB) | HTML iconHTML

    We present an efficient three-dimensional wavelet transform (3D-WT) algorithm for video compression. This algorithm performs the temporal decomposition of a video sequence in a more efficient way than the classical 3D-WT algorithm. We have conducted a set of experimental evaluations of the proposed algorithm using various video sequences. Experimental results show that our algorithm exhibits lower... View full abstract»

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  • Cellular search algorithm for motion estimation

    Publication Year: 2001, Page(s):173 - 179
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB) | HTML iconHTML

    This paper presents a novel cellular search (CS) algorithm for block-matching motion estimation. The algorithm employs two search patterns, namely the large cellular search pattern (LCSP) and the small cellular search pattern (SCSP), to search the best matching block. The LCSP assumes that the best matching block can be located at any direction of the LCSP center, and hence every possible directio... View full abstract»

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  • 3D reconstruction from a stereo pair without the knowledge of intrinsic or extrinsic parameters

    Publication Year: 2001, Page(s):148 - 155
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB) | HTML iconHTML

    Estimation of the spatial coordinates of object points of a 3D environment, determined from stereo images of that environment, is well documented. However, the current approaches to 3D reconstruction of a scene from stereo images, require either the intrinsic camera parameters, the extrinsic parameters, or the spatial coordinates of at least five world points of that scene. In practice many more s... View full abstract»

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  • Hierarchical video motion estimation using a neural network

    Publication Year: 2001, Page(s):202 - 208
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB) | HTML iconHTML

    In our previous papers, we have presented a neural network-based motion estimation technique that is applicable to purely translational as well as affine movements. In this paper we present a further advance, namely a hierarchical version which, while capitalizing on the merits of the previous technique, achieves some additional advantages. These are: (a) the ability to deal with very large motion... View full abstract»

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  • Adding precision to airborne video with model based registration

    Publication Year: 2001, Page(s):44 - 51
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB) | HTML iconHTML

    While unmanned aerial vehicles are gaining wider use in intelligence, surveillance and reconnaissance applications, the utility of airborne video has been hampered due to inaccurate telemetry data. Too much manual control is required for exploitation and it is difficult to relate video to other data due to its small field of view and limited context. In this paper, we present our approach for auto... View full abstract»

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  • Hybrid mesh-based/block-based motion compensation architecture

    Publication Year: 2001, Page(s):194 - 201
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    The mesh-based model offers a lot of functionalities that the block-based model does not offer. While the mesh-based modes are suitable for spatially continuous representation of in-plane rotations, zooms, and other motions that can be represented by parametric mappings, the block-based models perform better around motion boundaries. Therefore, a hybrid codec with block-based and mesh-based modes,... View full abstract»

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  • Closed captioning transmission and display in digital television

    Publication Year: 2001, Page(s):126 - 131
    Cited by:  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB) | HTML iconHTML

    The digital television (DTV) transport stream is designed to accommodate NTSC and DTV caption services. This paper describes how services are inserted into and transported within the bitstream, and the challenges that must be overcome in order to provide correctly formatted and synchronized captioning. Caption service transmission starts at the caption-encoding head-end feeding the DTV encoder (MP... View full abstract»

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  • On a new motion estimation and segmentation framework for digital video processing

    Publication Year: 2001, Page(s):69 - 76
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB) | HTML iconHTML

    We give an overview of a new digital video sequence processing framework. We discuss how a combination of several image processing and computer vision components can be used to obtain (semi-)automatic delineation and following or tracking of moving objects which are present in digital video image sequences. We illustrate the current research results with image segmentation and video tracking resul... View full abstract»

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  • Region extraction with multiple active contour models

    Publication Year: 2001, Page(s):56 - 63
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB) | HTML iconHTML

    For interactive image manipulation, a new region extraction method using active contour models (ACM) is proposed. In this method, to improve extraction accuracy, multiple ACMs controlled by the statistical characteristics of image data are applied to the region of a single object. These ACMs compete with each other and each ACM extracts a subregion of uniform image properties. As a result of this ... View full abstract»

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