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BioMed Research International
Volume 2017, Article ID 6783209, 17 pages
https://doi.org/10.1155/2017/6783209
Research Article

Multilevel Thresholding Method Based on Electromagnetism for Accurate Brain MRI Segmentation to Detect White Matter, Gray Matter, and CSF

1Department of ECE, VNITSW, Guntur, Andhra Pradesh, India
2Department of ECE, VVIT, Guntur, Andhra Pradesh, India
3Department of ECE, JNTUCE, Hyderabad, Telangana, India

Correspondence should be addressed to G. Sandhya; moc.liamg@604gayhdnas

Received 12 July 2017; Revised 5 September 2017; Accepted 10 October 2017; Published 9 November 2017

Academic Editor: Nasimul Noman

Copyright © 2017 G. Sandhya et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This work explains an advanced and accurate brain MRI segmentation method. MR brain image segmentation is to know the anatomical structure, to identify the abnormalities, and to detect various tissues which help in treatment planning prior to radiation therapy. This proposed technique is a Multilevel Thresholding (MT) method based on the phenomenon of Electromagnetism and it segments the image into three tissues such as White Matter (WM), Gray Matter (GM), and CSF. The approach incorporates skull stripping and filtering using anisotropic diffusion filter in the preprocessing stage. This thresholding method uses the force of attraction-repulsion between the charged particles to increase the population. It is the combination of Electromagnetism-Like optimization algorithm with the Otsu and Kapur objective functions. The results obtained by using the proposed method are compared with the ground-truth images and have given best values for the measures sensitivity, specificity, and segmentation accuracy. The results using 10 MR brain images proved that the proposed method has accurately segmented the three brain tissues compared to the existing segmentation methods such as K-means, fuzzy C-means, OTSU MT, Particle Swarm Optimization (PSO), Bacterial Foraging Algorithm (BFA), Genetic Algorithm (GA), and Fuzzy Local Gaussian Mixture Model (FLGMM).