Authors:
B. S. Harish
1
;
S. V. Aruna Kumar
1
;
Francesco Masulli
2
and
Stefano Rovetta
2
Affiliations:
1
Sri Jayachamarajendra College of Engineering, India
;
2
University of Genova, Italy
Keyword(s):
Segmentation, Clustering, Fuzzy C Means, Ant Colony Optimization, RSKFCM.
Related
Ontology
Subjects/Areas/Topics:
Applications
;
Clustering
;
Evolutionary Computation
;
Fuzzy Logic
;
Medical Imaging
;
Pattern Recognition
;
Software Engineering
;
Theory and Methods
Abstract:
Segmentation is a fundamental preprocessing step in medical imaging for diagnosis and surgical operations planning. The popular Fuzzy C-Means clustering algorithm perform well in the absence of noise, but it is non robust to noise as it makes use of the Euclidean distance and does not exploit the spatial information of the image. These limitations can be addressed by using the Robust Spatial Kernel FCM (RSKFCM) algorithm that takes advantage of the spatial information and uses a Gaussian kernel function to calculate the distance between the center and data points. Though RSKFCM gives a good result, the main drawback of this method is the inability of obtaining good minima for the objective function as it happens for many other clustering algorithms. To improve the efficiency of RSKFCM method, in this paper, we proposed the Ant Colony Optimization algorithm based RSKFCM (ACORSKFCM). By using the Ant Colony Optimization, RSKFCM initializes the cluster centers and reaches good minima of
the objective function. Experimental results carried out on the standard medical datasets like Brain, Lungs, Liver and Breast images. The results show that the proposed approach outperforms many other FCM variants.
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