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Fuzzy neural network-based texture analysis of ultrasonic images

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6 Author(s)
Pavlopoulos, S. ; Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece ; Kyriacou, E. ; Koutsouris, D. ; Blekas, K.
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The efficacy of a novel fuzzy neural network classifier for the characterization of ultrasonic liver images based on texture analysis techniques is investigated. Classification features are extracted with the use of image texture analysis techniques such as fractal dimension texture analysis, spatial gray-level dependence matrices, gray-level difference statistics, gray-level run-length statistics, and first-order gray-level parameters. These features are fed to a neural network classifier based on geometrical fuzzy sets. Starting from the construction of the Voronoi diagram of the training patterns, an aggregation of Voronoi regions is performed, leading to the identification of larger regions belonging exclusively to one of the pattern classes. The resulting scheme is a constructive algorithm that defines fuzzy clusters of patterns. Based on observations concerning the grade of membership of the training patterns to the created regions, decision probabilities are computed through which the final classification is performed.

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Engineering in Medicine and Biology Magazine, IEEE  (Volume:19 ,  Issue: 1 )