The quantitative evaluation of image quality and definition of an image
I. Chudáček (1988)
Acta Universitatis Carolinae. Mathematica et Physica
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I. Chudáček (1988)
Acta Universitatis Carolinae. Mathematica et Physica
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Laskov, Lasko, Tsvetkov, Milcho (2013)
Serdica Journal of Computing
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Carte du Ciel (from French, map of the sky) is a part of a 19th century extensive international astronomical project whose goal was to map the entire visible sky. The results of this vast effort were collected in the form of astrographic plates and their paper representatives that are called astrographic maps and are widely distributed among many observatories and astronomical institutes over the world. Our goal is to design methods and algorithms to automatically extract data from digitized...
Tomasz Praczyk (2007)
International Journal of Applied Mathematics and Computer Science
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The problem of continuous position availability is one of the most important issues connected with the human activity at sea. Because the availability of satellite navigational systems can be limited in some cases, e.g. during military operations, one has to consider additional methods of acquiring information about the ship's position. In this paper one of these methods is presented, which is based on exploiting landmarks located on a coastline. A navigational radar is used to obtain...
Olga Miljković (2009)
Kragujevac Journal of Mathematics
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Mariusz Frąckiewicz, Henryk Palus (2011)
International Journal of Applied Mathematics and Computer Science
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In this paper, the idea of applying the k-harmonic means (KHM) technique in biomedical colour image segmentation is presented. The k-means (KM) technique establishes a background for the comparison of clustering techniques. Two original initialization methods for both clustering techniques and two evaluation functions are described. The proposed method of colour image segmentation is completed by a postprocessing procedure. Experimental tests realized on real endoscopic colour images...
Jianhui Zhao, Zhong Zhang, Shizhong Han, Chengzhang Qu, Zhiyong Yuan, Dengyi Zhang (2011)
Computer Science and Information Systems
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Paola Campadelli, Raffaella Lanzarotti, Giuseppe Lipori (2006)
RAIRO - Theoretical Informatics and Applications
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We present a novel eye localization method which can be used in face recognition applications. It is based on two SVM classifiers which localize the eyes at different resolution levels exploiting the Haar wavelet representation of the images. We present an extensive analysis of its performance on images of very different public databases, showing very good results.