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Ignorance functions. An application to the calculation of the threshold in prostate ultrasound images.

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Bustince, H. y Pagola, M. y Fernandez, J. y Melo-Pinto, P. y Couto, P. y Tizhoosh, H.R. y Montero, Javier (2010) Ignorance functions. An application to the calculation of the threshold in prostate ultrasound images. Fuzzy Sets and Systems, 161 (1). pp. 20-36. ISSN 0165-0114

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URL Oficial: http://www.sciencedirect.com/science/article/pii/S0165011409001389


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In this paper, we define the concept of an ignorance function and use it to determine the best threshold with which to binarize an image. We introduce a method to construct such functions from t-norms and automorphisms. By means of these new measures, we represent the degree of ignorance of the expert when given one fuzzy set to represent the background and another to represent the object. From this ignorance degree, we assign interval-valued fuzzy sets to the image in such a way that the best threshold is given by the interval-valued fuzzy set with the lowest associated ignorance. We prove that the proposed method provides better thresholds than the fuzzy classical methods when applied to transrectal prostateultrasoundimages. The experimental results on ultrasound and natural images also allow us to determine the best choice of the function to represent the ignorance.


Tipo de documento:Artículo
Palabras clave:Ignorance function; Interval-valued fuzzy set; Interval-valued fuzzy entropy; Image thresholding; Ultrasoundimages
Materias:Ciencias > Matemáticas > Lógica simbólica y matemática
Código ID:16020
Depositado:20 Jul 2012 10:33
Última Modificación:20 Abr 2016 13:20

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