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Third International Workshop on Digital and Computational Video, 2002. DCV 2002. Proceedings.

15-15 Nov. 2002

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Displaying Results 1 - 25 of 29
  • Proceedings Third International Workshop on Digital and Computational Video. DCV 2002 (Cat. No.02EX724)

    Publication Year: 2002
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  • Author index

    Publication Year: 2002, Page(s): 217
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    Freely Available from IEEE
  • A novel packet loss recovery for video stream transmission over networks

    Publication Year: 2002, Page(s):205 - 212
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1337 KB) | HTML iconHTML

    Transmitting high-quality, real-time interactive video over lossy networks such as Internet and wireless networks is very challenging, because of limited bandwidth and high packet loss rates. The loss of packets in a video frame leads not only to reduced quality of that frame, but also results in the propagation of that distortion to successive frames. We present a novel error recovery scheme base... View full abstract»

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  • A superresolution imaging method based on dense subpixel-accurate motion fields

    Publication Year: 2002, Page(s):35 - 42
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (614 KB) | HTML iconHTML

    A superresolution imaging method suitable for imaging objects moving in a dynamic scene is described. The main operations are performed over three threads: the computation of a dense interframe 2D motion-field induced by the moving objects at subpixel resolution in the first thread. Concurrently, each video image frame is enlarged by cascade of an ideal low-pass filter and a higher rate sampler, e... View full abstract»

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  • Design and implementation of concatenated decoder

    Publication Year: 2002, Page(s):135 - 142
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB) | HTML iconHTML

    A concatenated decoder mainly composed of depunctured Viterbi decoder, convolutional deinterleaver, and Reed-Solomon decoder is presented. It has very wide applications in DVB, HDTV and satellite communication systems. In the convolutional interleaver, an over-clocking scheme is employed to guarantee the speed limits. The algorithms of Viterbi decoder and RS decoder are modified T-algorithm and mo... View full abstract»

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  • A general framework for tracking objects in a multi-camera environment

    Publication Year: 2002, Page(s):200 - 204
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (453 KB) | HTML iconHTML

    We present a framework for real-time tracking of objects. Our system consists of multiple cameras and a control unit that communicate through a network. Each camera has a general-purpose processor and a reconfigurable hardware unit embedded in it. Therefore, some computation can be performed at the point of data collection. We argue that collocating the computation with the data at vision sensors ... View full abstract»

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  • An analysis of Daubechies discrete wavelet transform based on algebraic integer encoding scheme

    Publication Year: 2002, Page(s):27 - 34
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (721 KB) | HTML iconHTML

    A new and novel encoding scheme of Daubechies wavelet coefficients for implementing discrete wavelet transform based on algebraic integer is proposed. This encoding technique eliminates the requirements to approximate the transformation matrix elements. Instead of approximating the matrix coefficients, we are able to obtain the exact representations for them. As a result, we achieve error-free cal... View full abstract»

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  • A prototype for parallel motion estimation architecture using full-search block matching algorithm

    Publication Year: 2002, Page(s):129 - 134
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    We present a new architecture for parallel motion estimation video processing. This architecture is designed to process the data in parallel; therefore, in comparison to the regularly used nonparallel architectures, it is up to 15 times faster. The speed of this architecture is suitable for frames of up to size 640*480 pixels, and its power efficiency makes it a very suitable design for mobile dev... View full abstract»

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  • Adaptive rate control for real time video coding process

    Publication Year: 2002, Page(s):60 - 67
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (463 KB) | HTML iconHTML

    The demand for a live video over the Internet and wireless links has grown rapidly. Therefore, it is very important to design a video compression system adaptive to variable network conditions. We propose an adaptive rate control scheme, which can be applied to design a video compression system adaptive to the available channel bandwidth. This scheme is better than existing schemes in the sense th... View full abstract»

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  • Multiple description coding using transforms and data fusion

    Publication Year: 2002, Page(s):192 - 199
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (545 KB) | HTML iconHTML

    A new multiple description coding technique is proposed, in which multiple descriptions are generated using different transforms and a linear fusion is employed to reconstruct the central description. This new method exhibits some of the advantages of multiple description vector quantization while having the complexity of multiple description scalar quantization. When this method is applied to fix... View full abstract»

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  • Omni-directional binocular stereoscopic images from one omni-directional camera

    Publication Year: 2002, Page(s):19 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (733 KB) | HTML iconHTML

    An omni-directional binocular stereoscopic image pair consists of two omni-directional panoramic images, where each image is for the left eye and the right eye. The panoramic stereo pair provides stereo sensation in a full 360°. The omni-directional binocular stereoscopic image pair cannot be photographed by two omni-directional cameras from two viewpoints, but can be constructed by mosaicing ... View full abstract»

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  • Cache performance of video computation workloads

    Publication Year: 2002, Page(s):169 - 175
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (529 KB) | HTML iconHTML

    Many video computation workloads execute on general-purpose computers including workstations, desktop systems and personal computers. The microprocessors that form the central processing unit of these systems typically expend a significant part of their real estate for on-chip caches and hence it is important to understand cache behavior of video computation workloads. Caches generally improve app... View full abstract»

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  • Stereo matching using generalized symmetry transform

    Publication Year: 2002, Page(s):116 - 122
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (433 KB) | HTML iconHTML

    We propose a way to find corresponding points of a stereoscopic image by applying an algorithm of a generalized symmetry transform. A stereoscopic image entails the acquisition of a left image and right image simultaneously. Firstly, by using corner detection for the edge of both left and right images, feature points are analyzed, a square domain on the center of each feature point is found, and s... View full abstract»

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  • Synthetic and natural hybrid coding for interactive broadcast TV

    Publication Year: 2002, Page(s):43 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1196 KB) | HTML iconHTML

    We describe some aspects of synthetic and natural hybrid coding for future developments in interactive broadcast TV. We show some hardware components in order to provide a basis for discussion. One problem we are dealing with is to reconstruct natural 3D objects as arbitrarily shaped 3D video objects. The intention is to improve scene realism. The computation of 3D video objects offers a variety o... View full abstract»

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  • An MPEG-4 FGS-based statistical multiplexer

    Publication Year: 2002, Page(s):143 - 150
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB) | HTML iconHTML

    We present a novel fine granular scalability (FGS)-based statistical multiplexing scheme for video broadcasting. In the light of our statistical study on intra- and inter-layer correlation, we develop a simple but efficient statistical multiplexing algorithm based on the proposed fairness criterion and smoothness constraint. Simulation results show effectiveness of the proposed statistical multipl... View full abstract»

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  • Implementation of enhanced services provided by digital video broadcasting

    Publication Year: 2002, Page(s):68 - 74
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (470 KB) | HTML iconHTML

    The digital video broadcast (DVB) transport stream, consisting of multiplexed audio, video and data, also provides important program and system information. We aim to use this data to develop an application that can demultiplex, decode and record particular television programs specified by the user. This application, content sensitive digital video recorder (DVR), records a particular program when... View full abstract»

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  • MPEG-4 extension for augmented stereoscopic video

    Publication Year: 2002, Page(s):176 - 183
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (659 KB) | HTML iconHTML

    We propose the extended MPEG-4 for augmented stereoscopic video. Augmented stereoscopic video is a stereoscopic synthetic video. Natural stereoscopic video and virtual CG object are synthesized. MPEG-4 has a scene graph, BIFS. BIFS is based on VRML. Augmented stereoscopic video is thought of as an off-line AR. Thus, there are some mismatch problems when augmented stereoscopic video is presented in... View full abstract»

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  • Low power full search block matching motion estimation architecture

    Publication Year: 2002, Page(s):123 - 128
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (466 KB) | HTML iconHTML

    We present an architectural enhancement to reduce the power consumption of one dimensional full-search block-matching (FSBM) motion estimation. The architecture eliminates unnecessary computations and reduces the power consumption without sacrificing the optimality and high throughput. Both the new and old architectures are compared for power consumption in order to clarify the effectiveness. View full abstract»

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  • Motion estimation with the redundant wavelet transform

    Publication Year: 2002, Page(s):53 - 59
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB) | HTML iconHTML

    We present a fast method for computation of the motion flow based on the redundant Haar transform of reference frames in a video sequence. This algorithm gives a multiscale representation of the motion flow, which allows progressive encoding. The high efficiency of the algorithm is achieved by a multiscale correlation between the current and reference frames of the coefficients on each of the Haar... View full abstract»

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  • A 3D video stream display architecture hybrid MEM/CMOS SIMD-parallel indexed swept-volume 3D displays

    Publication Year: 2002, Page(s):2 - 3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (217 KB) | HTML iconHTML

    We describe the architecture of a three-dimensional image display comprised of a helical surface, which is kept rotating about its axis. The images are projected by means of a high performance digital mirror array, working in a SIMD parallel mode. The optical ray emanating from each mirror would intersect with the rotating surface at a 3D point whose 3D position is determined by the exact time of ... View full abstract»

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  • Designing an embedded video processing camera using a 16-bit microprocessor for surveillance system

    Publication Year: 2002, Page(s):151 - 158
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (725 KB) | HTML iconHTML

    We describe the design and implementation of a hybrid intelligent surveillance system consisting of an embedded system and a personal computer (PC)-based system. The embedded system performs some of the image processing tasks and sends the processed data to a PC. The PC tracks persons and recognizes two-person interactions by using a grayscale side-view image sequence captured by a stationary came... View full abstract»

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  • Illumination mipmaps for texture mapping in computational video

    Publication Year: 2002, Page(s):75 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (590 KB) | HTML iconHTML

    In computational video, acquired images are often texture mapped to blend with computer generated polygonal surfaces. The shading of a polygonal surface changes as the light source direction relative to the composite object changes due, for instance, to the object's motion. We propose the use of so-called illumination mipmaps that can adjust the texture mapped image according to the illumination c... View full abstract»

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  • XMT tools for interactive broadcasting contents description

    Publication Year: 2002, Page(s):184 - 191
    Cited by:  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (675 KB) | HTML iconHTML

    Interactive broadcasting is now considered as a next generation broadcasting service, which covers territorial, mobile and wireless terminals. In interactive broadcasting, viewers not only watch the broadcasting programs but also pass their requirements to program providers. In order to represent this interactivity, it is considered that the MPEG-4 is a well-adopted standard because of its object-... View full abstract»

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  • Funding opportunities for high-risk research

    Publication Year: 2002, Page(s):4 - 16
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1163 KB) | HTML iconHTML

    This talk is about, "Accelerating DCV Innovation: The Advanced Technology Program". The Advanced Technology Program (ATP) is one of the nation's leading sources of funding for industry-led high-risk technology development. Many project's supported by ATP have significant potential to impact digital and computational video. This presentation briefly examines the potential impact of ATP research pro... View full abstract»

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  • A low power VLSI architecture for multistage interval-based motion estimation (MIME) algorithm

    Publication Year: 2002, Page(s):159 - 166
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (543 KB) | HTML iconHTML

    We present an algorithmic enhancement of the full-search block-matching algorithm for motion estimation. The proposed algorithm reduces the computational load by successively eliminating noncandidate blocks from the search window. The elimination process uses low bit-resolution blocks and it is applied in two stages for motion vector computation. This computational reduction leads to enhanced perf... View full abstract»

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