A robust medical image segmentation method using KL distance and local neighborhood information

Authors:
Qian Zheng;Zhentai Lu;Wei Yang;Minghui Zhang;Qianjin Feng;Wufan Chen
Affiliations:
School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China;School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China;School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China;School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China;School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China;School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China
Venue:
Computers in Biology and Medicine
Year:
2013

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Abstract

In this paper, we propose an improved Chan-Vese (CV) model that uses Kullback-Leibler (KL) distances and local neighborhood information (LNI). Due to the effects of heterogeneity and complex constructions, the performance of level set segmentation is subject to confounding by the presence of nearby structures of similar intensity, preventing it from discerning the exact boundary of the object. Moreover, the CV model cannot usually obtain accurate results in medical image segmentation in cases of optimal configuration of controlling parameters, which requires substantial manual intervention. To overcome the above deficiency, we improve the segmentation accuracy by the usage of KL distance and LNI, thereby introducing the image local characteristics. Performance evaluation of the present method was achieved through experiments on the synthetic images and a series of real medical images. The extensive experimental results showed the superior performance of the proposed method over the state-of-the-art methods, in terms of both robustness and efficiency.