scholarly journals Brain Image Segmentation Based on Fuzzy Clustering

2018 ◽  
Vol 28 (3) ◽  
pp. 220
Author(s):  
Shatha J. Mohammed
Keyword(s):  
Image Segmentation ◽  
Performance Evaluation ◽  
Brain Tumour ◽  
Level Set ◽  
Fuzzy Clustering ◽  
Medical Image ◽  
Medical Images ◽  
Medical Image Segmentation ◽  
Brain Image ◽  
The Brain

The segmentation performance is topic to suitable initialization and best configuration of supervisory parameters. In medical image segmentation, the segmentation is very important when the diagnosing becomes very hard in medical images which are not properly illuminated. This paper proposes segmentation of brain tumour image of MRI images based on spatial fuzzy clustering and level set algorithm. After performance evaluation of the proposed algorithm was carried on brain tumour images, the results showed confirm its effectiveness for medical image segmentation, where the brain tumour is detected properly.

Composite fuzzy-wavelet-based active contour for medical image segmentation

2020 ◽  
Vol 37 (9) ◽  
pp. 3525-3541
Author(s):  
Hiren Mewada ◽  
Amit V. Patel ◽  
Jitendra Chaudhari ◽  
Keyur Mahant ◽  
Alpesh Vala
Keyword(s):  
Image Segmentation ◽  
Level Set ◽  
Legendre Polynomial ◽  
Active Contour ◽  
Medical Image ◽  
Medical Images ◽  
Medical Image Segmentation ◽  
Low Resolution ◽  
Content Type ◽  
Proposed Model

Purpose In clinical analysis, medical image segmentation is an important step to study the anatomical structure. This helps to diagnose and classify abnormality in the image. The wide variations in the image modality and limitations in the acquisition process of instruments make this segmentation challenging. This paper aims to propose a semi-automatic model to tackle these challenges and to segment medical images. Design/methodology/approach The authors propose Legendre polynomial-based active contour to segment region of interest (ROI) from the noisy, low-resolution and inhomogeneous medical images using the soft computing and multi-resolution framework. In the first phase, initial segmentation (i.e. prior clustering) is obtained from low-resolution medical images using fuzzy C-mean (FCM) clustering and noise is suppressed using wavelet energy-based multi-resolution approach. In the second phase, resultant segmentation is obtained using the Legendre polynomial-based level set approach. Findings The proposed model is tested on different medical images such as x-ray images for brain tumor identification, magnetic resonance imaging (MRI), spine images, blood cells and blood vessels. The rigorous analysis of the model is carried out by calculating the improvement against noise, required processing time and accuracy of the segmentation. The comparative analysis concludes that the proposed model withstands the noise and succeeds to segment any type of medical modality achieving an average accuracy of 99.57%. Originality/value The proposed design is an improvement to the Legendre level set (L2S) model. The integration of FCM and wavelet transform in L2S makes model insensitive to noise and intensity inhomogeneity and hence it succeeds to segment ROI from a wide variety of medical images even for the images where L2S failed to segment them.

scholarly journals Regularized level set models using fuzzy clustering for medical image segmentation

Filomat ◽  
2018 ◽  
Vol 32 (5) ◽  
pp. 1507-1512 ◽  
Author(s):  
Xiang Shan ◽  
Daeyoung Kim ◽  
Etsuko Kobayashi ◽  
Bing Li
Keyword(s):  
Image Segmentation ◽  
Numerical Analysis ◽  
Level Set ◽  
Fuzzy Clustering ◽  
Medical Image ◽  
Level Set Methods ◽  
Medical Image Segmentation ◽  
Variational Segmentation ◽  
Analysis Tools ◽  
Medical Image Computing

Level set methods are a kind of general numerical analysis tools that are specialized for describing and controlling implicit interface dynamically. It receives widespread attention in medical image computing and analysis. There have been a lot of level set models designed and regularized for medical image segmentation. For the sake of simplicity and clarity, we merely concentrate on our recent works of regularizing level set methods with fuzzy clustering in this paper. It covers two most famous level set models, namely Hamilton-Jacobi functional and Mumford-Shah functional, for variational segmentation and region competition respectively. The strategies of fuzzy regularization are elaborated in detail and their applications in medical image segmentation are demonstrated with examples.

scholarly journals A New Kernel-Based Fuzzy Level Set Method for Automated Segmentation of Medical Images in the Presence of Intensity Inhomogeneity

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Maryam Rastgarpour ◽  
Jamshid Shanbehzadeh
Keyword(s):  
Image Segmentation ◽  
Level Set ◽  
Medical Image ◽  
Medical Images ◽  
Medical Image Segmentation ◽  
Gaussian Kernel ◽  
Intensity Inhomogeneity ◽  
Integrative Approach ◽  
Robust Segmentation ◽  
Level Set Evolution

Researchers recently apply an integrative approach to automate medical image segmentation for benefiting available methods and eliminating their disadvantages. Intensity inhomogeneity is a challenging and open problem in this area, which has received less attention by this approach. It has considerable effects on segmentation accuracy. This paper proposes a new kernel-based fuzzy level set algorithm by an integrative approach to deal with this problem. It can directly evolve from the initial level set obtained by Gaussian Kernel-Based FuzzyC-Means (GKFCM). The controlling parameters of level set evolution are also estimated from the results of GKFCM. Moreover the proposed algorithm is enhanced with locally regularized evolution based on an image model that describes the composition of real-world images, in which intensity inhomogeneity is assumed as a component of an image. Such improvements make level set manipulation easier and lead to more robust segmentation in intensity inhomogeneity. The proposed algorithm has valuable benefits including automation, invariant of intensity inhomogeneity, and high accuracy. Performance evaluation of the proposed algorithm was carried on medical images from different modalities. The results confirm its effectiveness for medical image segmentation.

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