Three-Dimensional Local Energy-Based Shape Histogram (3D-LESH): A Novel Feature Extraction Technique

Wajid, SK;Hussain, A;Huang, KZ

[Wajid, Summrina Kanwal; Hussain, Amir] Univ Stirling, Sch Nat Sci, Div Comp Sci & Math, Stirling, Scotland.
[Wajid, Summrina Kanwal] Int Riphah Univ, Islamabad, Pakistan.
[Huang, Kaizhu] Xian Jiaotong Liverpool Univ, Dept Elect & Elect Engn, Suzhou 215123, Peoples R China.

EXPERT SYSTEMS WITH APPLICATIONS

Volume:112 Pages:388-400

DOI:10.1016/j.eswa.2017.11.057

Publication Year:2018

JCR:Q1

CAS JCR:2区

ESI Discipline:ENGINEERING

Latest Impact Factor:6.954

Document Type:Journal Article

Identifier:http://hdl.handle.net/20.500.12791/001572

Abstract

In this paper, we present a novel feature extraction technique, termed Three-Dimensional Local Energy-Based Shape Histogram (3D-LESH), and exploit it to detect breast cancer in volumetric medical images. The technique is incorporated as part of an intelligent expert system that can aid medical practitioners making diagnostic decisions. Analysis of volumetric images, slice by slice, is cumbersome and inefficient. Hence, 3D-LESH is designed to compute a histogram-based feature set from a local energy map, calculated using a phase congruency (PC) measure of volumetric Magnetic Resonance Imaging (MRI) scans in 3D space. 3D-LESH features are invariant to contrast intensity variations within different slices of the MRI scan and are thus suitable for medical image analysis. The contribution of this article is manifold. First, we formulate a novel 3D-LESH feature extraction technique for 3D medical images to analyse volumetric images. Further, the proposed 3D-LESH algorithmic, for the first time, applied to medical MRI images. The final contribution is the design of an intelligent clinical decision support system (CDSS) as a multi-stage approach, combining novel 3D-LESH feature extraction with machine learning classifiers, to detect cancer from breast MRI scans. The proposed system applies contrast-limited adaptive histogram equalisation (CLAHE) to the MRI images before extracting 3D-LESH features. Furthermore, a selected subset of these features is fed into a machine-learning classifier, namely, a support vector machine (SVM), an extreme learning machine (ELM) or an echo state network (ESN) classifier, to detect abnormalities and distinguish between different stages of abnormality. We demonstrate the performance of the proposed technique by its application to benchmark breast cancer MRI images. The results indicate high-performance accuracy of the proposed system (98%%+/- 0.0050, with an area under a receiver operating charactertistic curve value of 0.9900 +/- 0.0050) with multiple classifiers. When compared with the state-of-the-art wavelet-based feature extraction technique, statistical analysis provides conclusive evidence of the significance of our proposed 3D-LESH algorithm. (C) 2017 The Authors. Published by Elsevier Ltd.

Keywords

Clinical decision support system (CDSS) Echo state network (ESN) Extreme learning machine (ELM) Local energy-based shape histogram (LESH) Magnetic resonance imaging (MRI) Support vector machine (SVM)

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