2004/4

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Recent Submissions

Now showing 1 - 5 of 15
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    New Directions in Modeling the Lighting Systems
    (Společnost pro radioelektronické inženýrství, 2004-12) Kadlecova, Eva; Fiala, Pavel
    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 Radiosity method and the Finite Elements Method. The paper contains modeling results and their verification by experimental measurements and by the Matlab simulation for this R-FEM method.
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    Implementation of CT and IHT Processors for Invariant Object Recognition System
    (Společnost pro radioelektronické inženýrství, 2004-12) Turan, Jan; Ovsenik, L'ubos; Benca, Martin; Turan, Jan, Jr.
    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 object recognition system was represented partially in C++ language for general-purpose processor on personal computer and partially described in VHDL code for implementation in PLD or ASIC.
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    Laboratory of Digital Video and Television Technology
    (Společnost pro radioelektronické inženýrství, 2004-12) Ricny, Vaclav
    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 BTU in Brno . This laboratory can be used for laboratory education and research.
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    Higher Efficiency of Motion Estimation Methods
    (Společnost pro radioelektronické inženýrství, 2004-12) Gamcova, Maria; Marchevsky, Stanislav; Gamec, Jan
    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 with higher precision by using adaptive weighted median filtering and its modifications. The median filter is well-known. A more general filter, called the Adaptively Weighted Median Filter (AWM), of which the median filter is a special case, is described. The submitted modifications conditionally use the AWM and full search algorithm (FSA). Simulation results show that the proposed technique can efficiently improve the motion estimation performance.
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    The DVB Channel Coding Application Using the DSP Development Board MDS TM-13 IREF
    (Společnost pro radioelektronické inženýrství, 2004-12) Kratochvil, Tomas; Slanina, Martin
    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 ADC and DAC. The program libraries features used for MPEG based video compression are outlined and then the algorithms of channel decoding (FEC protection against errors) are presented including the flowchart diagrams. The paper presents the partial hardware implementation of the simulation system that covers selected phenomena of DVB baseband processing and it is used for real time interactive demonstration of error protection influence on transmitted digital video in laboratory and education.