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Mathematical model of a sensing device based on piezo resonator with changeable electrode gap is further developed. Dependences of resonance frequency and conductivity of the piezoelectric sensing device on parameters of movable electrode formed by a cylindrical surface for which one of hyperbole branches serves as guide are obtained. Grading characteristics in the form of dependence of frequency...
This article is devoted to improving previously developed texture classifier that performs on noisy images. The basic principle of this classifier is to join several simple local parameters using some fuzzy logic system (support vector machine or neural network). It is shown that aggregating procedure applied on the classifier's input can result in significant improvement of its efficiency.
Lossy compression is often used in practice of image processing. A specific feature of our research is that we assume optical and/or medical images to be compressed noisy and take this fact into account. Moreover, major attention is paid to the specific case of spatially correlated noise. The study is carried out for five different compression methods based on discrete cosine and wavelet orthogonal...
It is shown that images can be subject to lossy compression in such a way that introduced distortions are not visible. For this purpose, two modern visual quality metrics, MSSIM and PSNR-HVS-M, can be used. Their values are to be provided not less than 0.99 and 40 dB, respectively, and the corresponding lossy compression is to be carried out. Attained compression ratio (CR) depends upon image properties...
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