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Gaussian Mixture Model Based Probabilistic Modeling of Images for Medical Image Segmentation

Riaz, Farhan and Rehman, Saad and Ajmal, Muhammad and Hafiz, Rehan and Hassan, Ali and Aljohani, Naif Radi and Nawaz, Raheel and Young, Rupert and Coimbra, Miguel (2020) Gaussian Mixture Model Based Probabilistic Modeling of Images for Medical Image Segmentation. IEEE Access, 8. pp. 16846-16856.

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Abstract

In this paper, we propose a novel image segmentation algorithm that is based on the probability distributions of the object and background. It uses the variational level sets formulation with a novel region based term in addition to the edge-based term giving a complementary functional, that can potentially result in a robust segmentation of the images. The main theme of the method is that in most of the medical imaging scenarios, the objects are characterized by some typical characteristics such a color, texture, etc. Consequently, an image can be modeled as a Gaussian mixture of distributions corresponding to the object and background. During the procedure of curve evolution, a novel term is incorporated in the segmentation framework which is based on the maximization of the distance between the GMM corresponding to the object and background. The maximization of this distance using differential calculus potentially leads to the desired segmentation results. The proposed method has been used for segmenting images from three distinct imaging modalities i.e. magnetic resonance imaging (MRI), dermoscopy and chromoendoscopy. Experiments show the effectiveness of the proposed method giving better qualitative and quantitative results when compared with the current state-of-the-art.

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