Doukovska L.Petkov V.Mihailov E.Vassileva S.2024-07-102024-07-102024-07-102024-07-102012-01-011314-40811311-970210.2478/cait-2012-0031SCOPUS_ID:84876110837https://rlib.uctm.edu/handle/123456789/272The paper presents an overview of the image-processing techniques. The set of basic theoretical instruments includes methods of mathematical analysis, linear algebra, probability theory and mathematical statistics, theory of digital processing of one-dimensional and multidimensional signals, wavelet-transforms and theory of information. This paper describes a methodology that aims to detect and diagnose faults, using thermographs approaches for the digital image processing technique.enArticle