Two-stage causal filtering of digital grayscale images
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2010, Vol 0, Issue 41
Abstract
The method of two-stage causal filtering of digital grayscale images distorted by Gaussian noise is synthesized. The analysis of suggested filtering method and its comparing with known filtering method is done on the model example with using of the computer statistical modeling.
Authors and Affiliations
S. Vishnevyy
Analysis of the influence of fixed-point computing on quantization noise in software DDC
Introduction. With the development of digital technology more attention is paid to making radio-receiving tracks based on SDR technology (Software Defined Radio), which is based on the processing of digitalized radio-fre...
Mathematical model of instantaneous frequency measuring process of radioemission phasemeasuring sources by interference type devices
Formulation of the problem in general. The question of determination of the instantaneous significance of the radio emission sources’ carrier frequency in the conditions of high aprior uncertainty of signal parameters an...
Analysis of spectral and correlation characteristics of sounding signal with the triangular frequency intra-modulation
A signal with a symmetric linear frequency modulation and its properties are considered, analytic form of signal and its spectrum are shown, figures of amplitude and phase spectra of signal are drawn, figures of ambigui...
Comparative analysis of the crystal-like and traditional microstrip structures efficiency
Introduction. Microstrip frequency selective devices are widely used in radio systems for various purposes. Crystal-like structures and devices that used for frequency selection of signals problems are described. Cryst...
Weak periodic signal detection with the fractional order modified Duffing-Holmes system
Introduction. The problem of the weak periodic signal detection is very important in the modern radio engineering and communications. The new chaotic systems have been being proposed for the weak signal detection for the...