Browsing by Subject "singular value decomposition"

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Access status: Open Access ,
A note on minimax rates of convergence in the Spektor-Lord-Willis problem
(Wydawnictwa AGH, 2010) Szkutnik, Zbigniew
In this note, attainable lower bounds are constructed for the convergence rates in a stereological problem of unfolding spheres size distribution from linear sections, which shows that a spectral type estimator is strictly rate minimax over some Sobolev-type classes of functions.
Access status: Open Access ,
Nowa metoda detekcji defektów tekstury w automatycznej inspekcji wizyjnej
(Wydawnictwa AGH, 2006) Tomczak, Łukasz; Mosorov, Volodymyr; Kaczorowski, Daniel
In this paper we propose an algorithm for texture defects detection, which doesn't use supervised classification. The algorithm can be simply applied in an automatic visual inspection system. For localization of texture defects we calculate features of each non-overlapping region of an image via the Singular Value Decomposition (SVD) and image processing techniques. In next step the algorithm uses the fuzzy c-means clustering (FCM) to classify each region into two clusters. Finally we define a distance between centres of defective and non-defective clusters using some threshold value chosen empirically.
Access status: Restricted ,
O pewnych oszacowaniach wyznaczników macierzy
(Data obrony: 2017-07-12) Bogdan, Aleksandra
Wydział Matematyki Stosowanej