2002/1
http://hdl.handle.net/11012/58130
2019-01-20T21:43:04ZPerformance of Basic Vector Directional Filters According to Used Angle Distance
http://hdl.handle.net/11012/58140
Performance of Basic Vector Directional Filters According to Used Angle Distance
Lukac, R.
Color images are typical examples of vector-valued signals. For that reason, vector processing represents an optimal approach. Although widely used vector filter is a vector median based on a reduced ordering, the directional processing with utilizing of the angle between input vectors can be used, too. By this way can be achieved well estimates, since vector directional filters preserve color chromaticity, whereas vector median filters may not satisfy this requirement. So, this paper is focused on the performance of basic vector directional filter in dependence on the various angle distances.
2002-04-01T00:00:00ZNew Predicted Spiral Search Block Matching Algorithm - PSSBMA
http://hdl.handle.net/11012/58141
New Predicted Spiral Search Block Matching Algorithm - PSSBMA
Pika, J.
This article describes the modification of the full search algorithm ESBMA (Exhaustive Search Block Matching Algorithm), which leads up to 40% speed increase. The modification is based on the ESBMA motion field analysis results. The major modifications to the ESBMA are: - Introduction of sub-optimality by thresholding the matching criterion (MAEthr); - Respecting constraints on motion vectors resulting from "head and shoulder" scenes by changing the position of the search start; - Respecting the dependence of motion vectors (MV) by prediction introduction.
2002-04-01T00:00:00ZAnalysis of Coplanar On-Chip Interconnects on Lossy Semiconducting Substrates
http://hdl.handle.net/11012/58134
Analysis of Coplanar On-Chip Interconnects on Lossy Semiconducting Substrates
Ymeri, H.; Nauwelaers, B.; Maex, K.; Vandenberghe, S.; de Roest, D.; Stucchi, M.
In this paper, a method for analysis and modeling of coplanar transmission interconnect lines that are placed on top of silicon-silicon oxide substrates is presented. The potential function is expressed by series expansions in terms of solutions of the Laplace equation for each homogeneous region of layered structure. The expansion coefficients of different series are related to each other and to potentials applied to the conductors via boundary conditions. In the plane of conductors, boundary conditions are satisfied at Nd discrete points with Nd being equal to the number of terms in the series expansions. The resulting system of inhomogeneous linear equations is solved by matrix inversion. No iterations are required. A discussion of the calculated line admittance parameters as functions of width of conductors, thickness of the layers, and frequency is given. The interconnect capacitance and conductance per unit length results are given and compared with those obtained using full wave solutions, and good agreement have been obtained in all the cases treated.
2002-04-01T00:00:00ZVHDL Models with Usage of the LFSR_PCKG Package
http://hdl.handle.net/11012/58137
VHDL Models with Usage of the LFSR_PCKG Package
Kovalsky, J.; Vlcek, K.; Mitrych, J.
LFSRs (Linear Feedback Shift Registers) are very often used in the BIST (Built-In Self-Test) methodology. Implementation of the LFSRs to the design or application of digital system, which supports BIST techniques or which only uses these LFSRs, can be done by VHDL language. This paper presents VHDL models of the devices and subroutines (e.g. test pattern generators, signature analysers). Models are based on LFSR structures with usage of the LFSR_PCKG package described in the (Kovalsky and Vlcek, 2001), which can be used in the applications supporting BIST techniques. Devices are described as behavioural and structural models. These models and descriptions can be used e.g. in the (Kovalsky, 2001). The LFSR_PCKG was modified and new approach is presented. Naturally, there are presented some synthesis conclusions of the VHDL models and applications in this paper.
2002-04-01T00:00:00Z