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International Symposium on VIPromCom Video/Image Processing and Multimedia Communications

16-19 June 2002

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Displaying Results 1 - 25 of 87
  • Proceedings VIPromCom-2002. 4th EURASIP - IEEE Region 8 International Symposium on Video/Image Processing and Multimedia Communications (IEEE Cat. No.02EX553)

    Publication Year: 2002
    Request permission for commercial reuse | PDF file iconPDF (343 KB)
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  • Performance analysis of MPEG-4 decoder and encoder

    Publication Year: 2002, Page(s):227 - 231
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (381 KB) | HTML iconHTML

    A performance analysis of MPEG-4 encoder and decoder programs on a standard personal computer is presented. The paper first describes the MPEG-4 computational load and discusses related works, then outlines the performance analysis. Experimental results show that while the decoder program can be easily executed in real time, the encoder requires execution times in the order of seconds per frame wh... View full abstract»

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  • Scrambling technique for video object watermarking resisting to MPEG-4

    Publication Year: 2002, Page(s):239 - 244
    Cited by:  Papers (2)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (471 KB) | HTML iconHTML

    The MPEG-4 video standard is nowadays more and more used for applications such as video editing, Internet or wireless video communications. This growing development has shown that these data must have a copyright protection such as watermarking. However one of the key points of the MPEG-4 video standard is the possibility to access and manipulate objects within a video sequence. And this particula... View full abstract»

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  • Index of authors

    Publication Year: 2002, Page(s):463 - 464
    IEEE is not the copyright holder of this material | PDF file iconPDF (89 KB)
    Freely Available from IEEE
  • Multimedia communication transmission in medicine

    Publication Year: 2002, Page(s):53 - 55
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (325 KB) | HTML iconHTML

    The authors deal with transmitting, archiving, and sharing medical data between various modalities. The emphasis is on PACS, transmission media ( in this case the Metropolitan Academic Computer Network in Brno, Czech Republic) and interconnection of various types of hospitals and medical institutions. View full abstract»

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  • Fuzzy coded trellis quantization

    Publication Year: 2002, Page(s):49 - 52
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (371 KB) | HTML iconHTML

    In this paper we propose an image compression algorithm based on embedded trellis quantization and inventive fuzzy context based modeling (TCQFCB). The indices produced by trellis-coded quantization are adaptively arithmetically coded, bit plane by bit plane. The fuzzy logic is used to assign the probability of the coded symbol for an arithmetic coder. The probability of the coded bit depends on t... View full abstract»

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  • Medical image processing using extended logic programming and artificial neural networks

    Publication Year: 2002, Page(s):39 - 42
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (800 KB) | HTML iconHTML

    As more health-care providers invest on computerised medical records, more clinical data is made accessible, and more clinical insights will become reliable. As data collection technologies advance, a plethora of data is available in almost all domains of one's life, being of particular interest to this work that of medicine. An area of particular interest is that of medical diagnosis based system... View full abstract»

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  • Internet-TV convergence in DVB-MHP

    Publication Year: 2002, Page(s):447 - 451
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (522 KB) | HTML iconHTML

    In last decade, we have seen the first steps to the end of passive television. Digital technology is mature enough to enhance traditional TV (limited to content reproduction) with computing capability to run multimedia software integrating richer formats. One step further, Internet access through television is becoming a real possibility. The MHP standard is the first one that tries to define regu... View full abstract»

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  • Networking multimedia classroom initiative

    Publication Year: 2002, Page(s):35 - 38
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (528 KB) | HTML iconHTML

    Bandwidth capabilities of broadband networks have turned interactive multimedia services into a cost-effective reality, targeting not only large companies, but also SME and individual users. An application of multimedia networks and multicasting videoconference via the Internet with direct social impact is teleteaching and in the broader sense distance learning. In this paper, combining the WWW an... View full abstract»

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  • Part-level object recognition

    Publication Year: 2002, Page(s):339 - 344
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (631 KB) | HTML iconHTML

    This paper proposes a technique for object recognition using superquadric built models. Superquadrics, which are three dimensional models suitable for part-level representation of objects, are reconstructed from range images using the recover- and-select paradigm. Using an interpretation tree, the presence of an object in the scene from the model database can be hypothesized. These hypotheses are ... View full abstract»

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  • Scalable and robust videoconference codec

    Publication Year: 2002, Page(s):377 - 382
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    This paper proposes and implements a system to transmit in real-time slow video signals over the public network. The proposed codec is based on a multiple description approach whose advantage is an intrinsic robustness to the packet losses, as the simulation results have proved. This coding approach is important also for end user scalability since each device can decide the information to receive ... View full abstract»

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  • Adaptive asymmetric diamond search algorithm for block-based motion estimation

    Publication Year: 2002, Page(s):283 - 288
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (581 KB) | HTML iconHTML

    In this paper, an adaptive asymmetric diamond search (AADS) for block based motion estimation is presented. The proposed method exploits an adaptive search pattern based on the predicted motion vector. In addition, the accuracy of the prediction is improved by changing the initial search center position. Simulation results show that the proposed algorithm can reduce the search points up to about 3... View full abstract»

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  • Reverse probability density of channel utilisation as a grade-of-service indication

    Publication Year: 2002, Page(s):391 - 395
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (411 KB) | HTML iconHTML

    The paper describes aspects of traffic levelling in a mobile network, and a method for easy traffic load diagnostics, unaffected by traffic type or cell resource changes. View full abstract»

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  • Adaptive interface for hypermedia applications

    Publication Year: 2002, Page(s):147 - 152
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (580 KB) | HTML iconHTML

    In the paper a concept for adaptive construction of the user interfaces of multiplatform hypermedia applications is presented. The user interface is becoming the crucial element of every information system and as the users as well as platforms are very differentiated it is difficult to construct a single equally efficient interface for all of these cases. Adaptive interfaces with social perspectiv... View full abstract»

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  • Experiences from implementing a MHP receiver

    Publication Year: 2002, Page(s):441 - 446
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (720 KB) | HTML iconHTML

    The growth of interactive digital TV heralds a seamless convergence of media, telecommunications, and information technology, offering viewers increasingly exciting and interactive programming. The need of standardization in this field led DVB to head the regulator project, defining standards for digital video broadcasting and interactive services in all transmission networks, and recently for a g... View full abstract»

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  • The design and implementation of a Chinese financial invoice recognition system

    Publication Year: 2002, Page(s):79 - 82
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (456 KB) | HTML iconHTML

    This paper designs and implements a financial invoice recognition system based on the features of the Chinese financial invoice. By using the linear whole block moving method in each vertical segment, a new fast algorithm is put forward to detect and rectify slanted images. To distinguish the different form types (the foundation necessary for locating the form fields, filtering the form lines, etc... View full abstract»

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  • Multimedia application for teaching and learning telecommunication protocols

    Publication Year: 2002, Page(s):31 - 34
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (486 KB) | HTML iconHTML

    In this paper we describe a multimedia presentation, which is designed as multimedia application for teaching and explaining principles of telecommunication protocols. The ISDN User Adaptation protocol for establishing an ISDN call connection through an IP network is presented The IUA protocol supports transport of Q.921 primitives from an ISDN network through an IP network. The designed presentat... View full abstract»

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  • Image quality evaluation

    Publication Year: 2002, Page(s):133 - 136
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (321 KB) | HTML iconHTML

    This paper is devoted to subjective and objective tests of image quality. The images were processed using different compressing algorithms (JPEG, KLT, Lura-wavelet) with compression ratio up to 100. After decompression they were tested on the quality changes. At first the subjective image quality test (DSCQS) was used. Then the objective quality test using the metric based on the human visual syst... View full abstract»

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  • On "slant-like" fast orthogonal transforms of arbitrary order

    Publication Year: 2002, Page(s):309 - 314
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (547 KB) | HTML iconHTML

    A concept for the construction of fast orthogonal transforms with matrices containing one or more predefined rows is proposed. In particular, two new families of "slant-like" transforms with matrices of arbitrary orders, including a constant row and a slant row of arbitrary slanting angle, are introduced. Transforms from these families may be computed with fast regular algorithms suitable for para... View full abstract»

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  • Image reduction for object recognition

    Publication Year: 2002, Page(s):333 - 338
    Cited by:  Papers (3)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1199 KB) | HTML iconHTML

    The problem addressed is that of the fast generation of accurate multiple downscaled copies of an input image, with an arbitrary non-integer reduction factor, for object detection and recognition. Three algorithms that can be implemented in parallel, recursive and hybrid architectures are introduced and compared in terms of their accuracy and computational complexity. It is shown that the recursiv... View full abstract»

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  • Fast and robust shadow detection in videoconference applications

    Publication Year: 2002, Page(s):371 - 375
    Cited by:  Papers (26)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (517 KB) | HTML iconHTML

    A new approach for real-time shadow detection and elimination is presented. In contrast to existing methods, hue and saturation is approximated in the YUV-colour space straight away. We show the linear influence of shadow to the YUV-values and exploit this behaviour in a fast decision scheme. The proposed method is robust and capable for real-time video processing without any need of colour space ... View full abstract»

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  • Motion compensated multimode video coding for noisy channels

    Publication Year: 2002, Page(s):279 - 282
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (381 KB) | HTML iconHTML

    Images with rapid motion are more or less degraded at low bit rate transmission. Hence a motion compensation technique is implemented to improve the coding efficiency. Performance in terms of bit rate is compared between motion compensated and nonmotion-compensated multimode video coding. Multimode video coding optimizes the tradeoff between the conflicting objectives of high compression ratio and... View full abstract»

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  • Implementing digital video into time line based authoring environments

    Publication Year: 2002, Page(s):427 - 430
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (479 KB) | HTML iconHTML

    In the paper we discuss and present a multimedia tutorial covering approaches in digital video implementation into an authoring tool based on time line authoring. First a short overview of the authoring approaches is presented in the introduction. Then, briefly some technological aspects of analog and digital video are discussed The main topic is discussed afterwards based on the time line authori... View full abstract»

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  • PCA applied to neural internal representation of input data - application to face recognition

    Publication Year: 2002, Page(s):65 - 68
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (548 KB) | HTML iconHTML

    An original method of feature extraction from image data is introduced using MLP (multilayer perceptron) and PCA (principal component analysis). This method is used in a human face recognition system and results are compared to a face recognition system using PCA directly and to a system with direct classification of input images by MLP. View full abstract»

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  • Performance of the all-optical packet switch in the WAN and MAN networks

    Publication Year: 2002, Page(s):387 - 390
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (397 KB) | HTML iconHTML

    In this paper, we provide a simulation-based study on the performance of the synchronous all-optical packet switch especially the impact of the contention resolution mechanism on the PLR in the synchronous all-optical network. View full abstract»

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