2004/4

 

Recent Submissions

  • Higher Efficiency of Motion Estimation Methods 

    Gamcova, Maria; Marchevsky, Stanislav; Gamec, Jan (Společnost pro radioelektronické inženýrství, 2004-12)
    This paper presents a new motion estimation algorithm to improve the performance of the existing searching algorithms at a relative low computational cost. We try to amend the incorrect and/or inaccurate estimate of motion ...

  • New Directions in Modeling the Lighting Systems 

    Kadlecova, Eva; Fiala, Pavel (Společnost pro radioelektronické inženýrství, 2004-12)
    This paper presents information about new directions in the modeling of lighting systems, and an overview of methods for the modeling of lighting systems. The new R-FEM method is described, which is a combination of the ...

  • Implementation of CT and IHT Processors for Invariant Object Recognition System 

    Turan, Jan; Ovsenik, L'ubos; Benca, Martin; Turan, Jan, Jr. (Společnost pro radioelektronické inženýrství, 2004-12)
    This paper presents PDL or ASIC implementation of key modules of invariant object recognition system based on the combination of the Incremental Hough transform (IHT), correlation and rapid transform (RT). The invariant ...

  • Laboratory of Digital Video and Television Technology 

    Ricny, Vaclav (Společnost pro radioelektronické inženýrství, 2004-12)
    This short paper provides information on the technical instrumentation and application possibilities of the newly installed laboratory of digital video and television technology at the Department of Radio Electronics FEEC ...

  • The DVB Channel Coding Application Using the DSP Development Board MDS TM-13 IREF 

    Kratochvil, Tomas; Slanina, Martin (Společnost pro radioelektronické inženýrství, 2004-12)
    The paper deals with the implementation of the channel coding according to DVB standard on DSP development board MDS TM-13 IREF and PC. The board is based on Philips Nexperia media processor and integrates hardware video ...

  • Modeling and Measurement of Image Sensor Characteristics 

    Fliegel, Karel (Společnost pro radioelektronické inženýrství, 2004-12)
    The optical transfer function (OTF), as an objective measure of the quality of optical and electro-optical systems, is closely related to the point spread function (PSF) and other derived characteristics, such as the ...

  • Human Visual System Models in Digital Image Watermarking 

    Levicky, Dusan; Foris, Peter (Společnost pro radioelektronické inženýrství, 2004-12)
    In this paper some Human Visual System (HVS) models used in digital image watermarking are presented. Four different HVS models, which exploit various properties of human eye, are described. Two of them operate in transform ...

  • Extrapolation of Incomplete Image Data with Discrete Orthogonal Transforms 

    Karlubikova, Tatiana; Polec, Jaroslav (Společnost pro radioelektronické inženýrství, 2004-12)
    In image processing and transmission, interpolation and extrapolation are of great importance whenever missing pixels have to be filled in, and many methods have been proposed to solve this problem. In this paper we present ...

  • Texturing of Surface of 3D Human Head Model 

    Mihalik, Jan; Michalcin, Viktor (Společnost pro radioelektronické inženýrství, 2004-12)
    The paper deals with an algorithm of texturing of the surface of 3D human head model. The proposed algorithm generates a texture consequently of several camera frames of the input video sequence. The texture values from ...

  • Efficient Models for Objective Video Quality Assessment 

    Javurek, Radim (Společnost pro radioelektronické inženýrství, 2004-12)
    Two models for objective assessment of compressed video quality and results from subjective and objective tests of several low bit-rate video coders are introduced in this paper. First model is based on mathematical measures ...

  • Convolutional/Single Parity Check Turbo Codes for Wireless Multimedia Communications 

    Kostov, Nikolay (Společnost pro radioelektronické inženýrství, 2004-12)
    Error correction codes are widely used in digital communications to improve the Quality of Service. The Quality of Service is typically expressed in terms of maximum acceptable frame error rate and bit error rate. The key ...

  • An Analysis/Synthesis System of Audio Signal with Utilization of an SN Model 

    Nagy, Martin Turi; Rozinaj, Gregor (Společnost pro radioelektronické inženýrství, 2004-12)
    An SN (sinusoids plus noise) model is a spectral model, in which the periodic components of the sound are represented by sinusoids with time-varying frequencies, amplitudes and phases. The remaining non-periodic components ...

  • Implementation of IMDCT Block of an MP3 Decoder through Optimization on the DCT Matrix 

    Galabov, Miroslav (Společnost pro radioelektronické inženýrství, 2004-12)
    The paper describes an attempt to create an efficient dedicated MP3-decoder, according to the MPEG-1 Layer III standard. A new method of Inverse Modified Discrete Cosine Transform by optimization on the Discrete Cosine ...

  • Distance Dependence of Path Loss for Millimeter Wave Inter-Vehicle Communications 

    Takahashi, Satoshi; Kato, Akihito; Sato, Katsuyoshi; Fujise, Masayuki (Společnost pro radioelektronické inženýrství, 2004-12)
    Millimeter-wave path loss between two cars was measured to obtain the general applicable distance for inter-vehicle communication systems in real environments. An abrupt and substantial increase in path loss due to ...

  • Simulation of Wireless Digital Communication Systems 

    Landqvist, Ronnie; Mohammed, Abbas (Společnost pro radioelektronické inženýrství, 2004-12)
    Due to the explosive demands for high speed wireless services, such as wireless Internet, email and cellular video conferencing, digital wireless communications has become one of the most exciting research topics in ...