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Proceedings EC-VIP-MC 2003. 4th EURASIP Conference focused on Video/Image Processing and Multimedia Communications (IEEE Cat. No.03EX667)

2-5 July 2003

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Displaying Results 1 - 25 of 71
  • Multiresolution for the detection of xiphoidal sounds in noisy medical audio signals

    Publication Year: 2003, Page(s):619 - 624 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (388 KB) | HTML iconHTML

    In this paper a method we have developed in order to detect particular events (xiphoidal sounds) in swallowing audio signals is presented. The difficulty of the problem comes from the noisy nature of our medical audio signals, due to biological and environmental reasons. Besides, xiphoidal sounds have a highly nonstationary behaviour that makes conventional analysis methods such as Fourier transfo... View full abstract»

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  • A speech recognition algorithm based on the features of Croatian language

    Publication Year: 2003, Page(s):613 - 618 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (339 KB) | HTML iconHTML

    The paper examines an acoustic-phonetic, approach to speech recognition, with elements of artificial intelligence. The vowels of the Croatian language are assumed as examples of speaking segments. Frequency transformation has been realized passing the speech segments through the corresponding selective filter banks. It has been shown that on the outputs of this filter bank the significantly compar... View full abstract»

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  • Performance of the Bluetooth-based WPAN for multimedia communication

    Publication Year: 2003, Page(s):783 - 788 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (386 KB) | HTML iconHTML

    In recent years, wireless ad hoc networks have been a growing area of research. Especially a Bluetooth-base wireless personal area network (WPAN) for multimedia communication requires more attention. The WPAN is new standard under development, as a part of the IEEE802.15 standard. This paper analyzes performance Bluetooth piconet for video transmission from theoretical and simulation point of view... View full abstract»

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  • Linear predictive speech coding using fermat number transform

    Publication Year: 2003, Page(s):607 - 612 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (412 KB) | HTML iconHTML

    This paper is about the reduction of the computational complexity of a speech codec. A linear predictive coding procedure is developed to allow its implementation with number theoretic transforms. The use of fermat number transform can reduce, in a significant way, the cost of linear predictive algorithm implantation on digital signal processor. View full abstract»

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  • The influence of increasing the tone value on the printing reproduction quality

    Publication Year: 2003, Page(s):545 - 550 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (395 KB) | HTML iconHTML

    In graphic reproduction, because of the specific features of the process influenced by different parameters, deformities of the screen element happen influencing more or less the reproduction quality decrease at consumers during the observation of the graphic product in real conditions. This work investigates the influence of the tone values increase on the quality decrease of the printed graphic ... View full abstract»

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  • Integrating a Flash file using Action Scripts in a data exchange system on the Internet

    Publication Year: 2003, Page(s):747 - 752 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (518 KB) | HTML iconHTML

    This paper proposes a modality of design for the on-line completion forms used on Web pages. The chosen example is based on the technical and educational analysis for a study application conceived in Flash programming language using the advanced level of facilities offered by ActionScript. In this approach the connection between a swf Flash file and an asp file is described in order to use Interne... View full abstract»

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  • An improved WBT model for enhanced interoperable and reusable environment

    Publication Year: 2003, Page(s):777 - 782 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (411 KB) | HTML iconHTML

    Nowadays, the use of multimedia content in e-learning systems is strongly increasing. However, the current authoring systems provide a proprietary media content format, which lacks compatibility between the various legacy systems. Additionally, the indexing and retrieval of these contents are not included. Therefore, several organizations have developed standard to overcome these drawbacks. This p... View full abstract»

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  • Gallery image effects on facial recognition systems

    Publication Year: 2003, Page(s):455 - 460 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (335 KB) | HTML iconHTML

    In this paper we quantify the effects of using different types and resolutions of gallery images on two different 2D facial recognition systems. Similar tests have been conducted in this area and adequately reported in the literature, however the galleries used for laboratory testing are usually standardised data sets, the results of which can be misleading if extrapolating into the operational en... View full abstract»

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  • Identification of sound source in machine vision sequences using audio information

    Publication Year: 2003, Page(s):601 - 606 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (346 KB) | HTML iconHTML

    Identifying the sound source location in the acquired image for further processing is of concern in image/video processing especially when tracking objects of vibrating or sound making nature in the scene becomes necessary. On the other hand relying on the picture content to identify such objects is not an easy task especially when there are similar objects in the acquired image. In this paper, we... View full abstract»

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  • Separating images collected in the World Wide Web into two semantic classes: photographs and graphics

    Publication Year: 2003, Page(s):495 - 500 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (419 KB) | HTML iconHTML

    This work presents the classification of images collected on the World Wide Web, using a supervised classification method, called IDS (itemized dichotomizer 3). The classification consists in separating the images into two semantic classes: graphics and photographs. Photographs include natural scenes, like people, faces, animals, flowers, landscapes and cities. Graphics are logos, drawings, icons,... View full abstract»

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  • Similarity hypergraph representation for impulsive noise reduction

    Publication Year: 2003, Page(s):539 - 544 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (369 KB) | HTML iconHTML

    In this paper, a new approach to the problem of impulsive noise reduction in image is presented. First, an image neighborhood hypergraph representation using a similarity measure is computed. Next, a detection procedure based on hypergraph properties is used to classify hyperedges either as noisy, or clean data. Then we apply a nonlinear filter to noisy detected pixels. The results show that the p... View full abstract»

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  • Web- based multimedia courseware: applied photonics

    Publication Year: 2003, Page(s):741 - 746 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    Distance education and nontraditional classrooms have the capability to reach more students using specialised instruction, self-paced learning and virtual laboratories (and/or virtual instruments). While a good learning experience can be obtained from such a purely simulation systems, in many situations, it is commonly recognised that effective and complete learning, especially in engineering and ... View full abstract»

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  • Picture quality evaluation strategy using a watermarking technique

    Publication Year: 2003, Page(s):721 - 726 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB) | HTML iconHTML

    Measurement of image quality is crucial for many image processing algorithms. In this paper, a "no-reference" picture quality evaluation is proposed. We use watermarking as a tool for evaluating quality. We embed, in an image, a watermark. Measures are computed between original and extracted watermarks instead of image to evaluate picture quality between the original image and the degraded one. Ex... View full abstract»

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  • Multimedia application with interactive and generative digital animation for performance arts

    Publication Year: 2003, Page(s):771 - 776 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (384 KB) | HTML iconHTML

    The use of multimedia with performance arts has a rich history. This paper proposes an innovative approach for the use of a multimedia application with performance arts, through the integration of interactive and generative digital animation. The application and its development are described. The interface, which is part of the visual experience produced by the application, consists of two rows an... View full abstract»

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  • A feedback control model for resource management on streaming media servers

    Publication Year: 2003, Page(s):835 - 840 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (362 KB) | HTML iconHTML

    Utilizing system resource efficiently, and guaranteeing the client's basic QoS requirement, and supporting more requirements concurrently, is very important to streaming media applications. In this paper, we present a feedback control resource management model and resource controllers for streaming servers. Through sampling the system states periodically, and adjusting the service attributes to ch... View full abstract»

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  • 2D versus 3D colour space face detection

    Publication Year: 2003, Page(s):449 - 454 vol.2
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (423 KB) | HTML iconHTML

    Computer vision is one out of many areas that want to understand the process of human functionality and copy that process with intention to complement human life with intelligent machines. For better human-computer interaction it is necessary for the machine to see people. This can be achieved by employing face detection algorithms, like the one used in the installation "15 seconds of fame" Franc ... View full abstract»

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  • Blind watermarking via low frequency component modification

    Publication Year: 2003, Page(s):701 - 706 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (427 KB) | HTML iconHTML

    In this paper we present a blind low frequency watermarking scheme. We obtain a robustness improvement to most common image processing operations by embedding the watermark in the approximation image of the original image. In order to embed the watermark with minimal loss in image fidelity, the watermark strength is modulated according to the local image characteristics. We generate a visual mask ... View full abstract»

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  • Testing the methods of sound signal compression

    Publication Year: 2003, Page(s):595 - 600 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (316 KB) | HTML iconHTML

    Three sound signal compression methods are being offered allowing (depending on the application aim) finding the best trade-off between the compression efficiency and the realization complexity. The testing of the methods proposed was done on a half-nature simulation system including personal computers 10 Mbit/sec Ethernet LAN and the sound signal input/output means. View full abstract»

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  • The statistical characterization of the sea for the segmentation of maritime images

    Publication Year: 2003, Page(s):489 - 494 vol.2
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (408 KB) | HTML iconHTML

    This paper describes part of an imaging system to indicate possible collision situations between maritime vessels. History shows us that any collision involving a marine craft can have a devastating effect both on human life and the environment. Presented here is a method for the statistical characterization of the sea present in an image and the subsequent segmentation of the image into two regio... View full abstract»

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  • HOS-based filtering scheme for stereo image compression

    Publication Year: 2003, Page(s):531 - 537 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (485 KB) | HTML iconHTML

    In this paper, a new HOS-based filtering scheme for stereo image compression applications is introduced. This method removes the effects of noise in a stereo image pair by applying the left image as the reference input to a 2-D transversal filter while the right image is used as the desired output. The filter weights are computed using a block-based cumulants matching method. Using higher order st... View full abstract»

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  • Interference in direct spread sequence mobile communication system

    Publication Year: 2003, Page(s):797 - 803 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (353 KB) | HTML iconHTML

    In this paper reverse link in the direct spread sequence code mobile communication system has been discussed. First part of the paper deals with interference conditions in the uplink transmission. Interference conditions calculations are based on statistic method by using the average emission power of mobile station in a cell. Also comparison of results obtained by Ramjee Prasad, using calculation... View full abstract»

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  • Architecture of an experimental Web multimedia educational repository

    Publication Year: 2003, Page(s):733 - 739 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (485 KB) | HTML iconHTML

    The paper describes an approach towards design of an experimental educational repository. The focus is on facilitating education, combining different learning style theories with technology preferences, and evaluating contribution of multimedia and Web technologies. The initial survey on learning style preferences towards using different technologies during the learning process showed significant ... View full abstract»

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  • Digital video broadcasting channel encoding and decoding simulation

    Publication Year: 2003, Page(s):851 - 856 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (377 KB) | HTML iconHTML

    The contribution deals with the European digital video broadcasting (DVB) standard channel coding using the forward error corrections with interleaving. The relevant methods of error protection in the transmission of digital television are introduced, the possible error rates are presented and the simulation tasks in Matlab are mentioned too. The whole model for DVB channel coding is used for rese... View full abstract»

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  • An oblivious and robust watermarking scheme using perceptual model

    Publication Year: 2003, Page(s):713 - 719 vol.2
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (410 KB) | HTML iconHTML

    To locate the right places for embedding watermark signals, and to set the proper strength of the embedded watermark signal is a critical problem for obtaining a robust and transparent watermark in color images. In this paper, a color visual model and the associated watermarking scheme are proposed for solving this problem. The visual model can estimate the profile of error visibility thresholds f... View full abstract»

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  • Network parameter estimation for voice data transmission in virtual private networks

    Publication Year: 2003, Page(s):811 - 815 vol.2
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (304 KB) | HTML iconHTML

    In this work we discuss possible use of virtual private networks (VPN) for voice data transmission. A VPN system for now is widely used for network resource access and it is desirable to understand such network usability for voice communications. For this we chose measurement system which gives network bottleneck link characteristics and based on this information we estimate queuing system paramet... View full abstract»

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