Poslední příspěvky

  • 3D Motion Estimation and Texturing of Human Head Model 

    Mihalik, J.; Michalcin, V. (Společnost pro radioelektronické inženýrství, 2004-04)
    This paper deals with 3D motion estimation of the wire frame head model on the basis of the analysis of the parameters of 3D global motion of the real human head for each frame of videosequence. The proposed algorithm of ...
  • Neural Network Program Package for Prosody Modeling 

    Tuckova, J.; Santarius, J. (Společnost pro radioelektronické inženýrství, 2004-04)
    This contribution describes the programme for one part of the automatic Text-to-Speech (TTS) synthesis. Some experiments (for example [14]) documented the considerable improvement of the naturalness of synthetic speech, ...
  • Digital Image Watermaking in Color Models Using DCT Transformation 

    Hovancak, R.; Levicky, D. (Společnost pro radioelektronické inženýrství, 2004-04)
    In recent years, an access to multimedia data has become much easier due to the rapid growth of the Internet. While this is usually considered an improvement of everyday life, it also makes unauthorized copying and ...
  • Improvement of Watson's DVQ Metric 

    Simik, R. (Společnost pro radioelektronické inženýrství, 2004-04)
    An improvement of Watson's DVQ (Digital Video Quality) metrics is introduced. This metric was chosen for its easy implementation caused by using DCT (Discrete Cosine Transform) for video decomposition into spatial channels. ...
  • Estimator Comparison of the Nakagami-m Parameter and its Application in Echocardiography 

    Kolar, R.; Jirik, R.; Jan, J. (Společnost pro radioelektronické inženýrství, 2004-04)
    This article deals with the comparison of various estimators of the m parameter from the Nakagami distribution. This kind of distribution has been used in many engineering applications and we present another possible ...
  • Contribution to the Chebyshev Approximations of the Normalized Low-Pass Prototype 

    Laipert, M.; Vlcek, M.; Vrbata, J. (Společnost pro radioelektronické inženýrství, 2004-04)
    The standard approximation algorithms are well described in the literature, but some equiripple approximations are described with some deficiencies. Especially Chebyshev and inverse Chebyshev approximations are often wrongly ...
  • The Performance of W-CDMA Highways Infostations 

    Taha-Ahmed, B.; Calvo-Ramon, M.; de Haro-Ariet, L. (Společnost pro radioelektronické inženýrství, 2004-04)
    The expected value of the signal to noise ratio of W-CDMA infostations is derived. A model of 5 cells is used to analyze the system performance. The infostations are assumed to exist in rural zones. The performance of the ...
  • The Capacity and Interference Statistics of High Car Traffic W-CDMA Street Cross-Shaped Micro-Cells (Uplink Analysis), 

    Taha-Ahmed, B.; Calvo-Ramon, M.; de Haro-Ariet, L. (Společnost pro radioelektronické inženýrství, 2004-04)
    Since interference is related to the capacity and performance of W-CDMA system, it is necessary to investigate the interference characteristics (the mean value and the variance). Thus, the uplink capacity and the interference ...
  • Analysis and Optimization of Telephone Speech Command Recognition System Performance in Noisy Environment 

    Novotny, J.; Sovka, Pavel; Uhlir, J. (Společnost pro radioelektronické inženýrství, 2004-04)
    This paper deals with the analysis and optimization of a speech command recognition system (SCRS) trained on Czech telephone database Speechdat(E) for use in a selected noisy environment. The SCRS is based on hidden Markov ...