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Ioannis Pitas
Researcher at Aristotle University of Thessaloniki
Publications - 826
Citations - 26338
Ioannis Pitas is an academic researcher from Aristotle University of Thessaloniki. The author has contributed to research in topics: Facial recognition system & Digital watermarking. The author has an hindex of 76, co-authored 795 publications receiving 24787 citations. Previous affiliations of Ioannis Pitas include University of Bristol & University of York.
Papers
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Journal ArticleDOI
Mapping Arable Land and Permanent Agriculture Extent and Change in Southern Greece Using the European Union LUCAS Survey and a 35-Year Landsat Time Series Analysis
TL;DR: In this article , the extent and change of agricultural land in Southern Greece from 1986 to 2020 using a combined European Land Use/Cover Area frame Survey (LUCAS) and Landsat time series approach.
Proceedings ArticleDOI
Face authentication using variants of elastic graph matching based on mathematical morphology that incorporate local discriminant coefficients
TL;DR: Two novel variants of dynamic link architecture that are based on mathematical morphology and incorporate local coefficients which weigh the contribution of each node according to its discriminatory power in elastic graph matching are proposed and tested for face authentication in a cooperative scenario where the candidates claim an identity to be checked.
Proceedings Article
Linear projection algorithms and morphological dynamic link architecture for frontal face verification
TL;DR: Experimental results indicate that the incorporation of linear projections in the morphological dynamic link architecture improves significantly the verification capability of the method.
Book ChapterDOI
Fuzzy Techniques in Digital Image Processing and Shape Analysis
Vassilios Chatzis,Ioannis Pitas +1 more
TL;DR: In this chapter, an overview of the applications of several fuzzy operators in image processing and analysis is presented, and the fuzzy location and scale estimators based on the extension principle, are presented.
Journal Article
A SOM variant based on the Wilcoxon test for document organization and retrieval
TL;DR: In this article, a variant of the self-organizing maps algorithm is proposed for document organization and retrieval, where bigrams are used to encode the available documents and signed ranks are assigned to these bigrams according to their frequencies.