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NCUEIR > College of Engineering > Department and Graduate Institute of Electronic Engineering > Periodical Articles > Item 987654321/11738

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/11738

Title:	Detection of Spectral Signatures in Multispectral MR Images for Classification
Authors:	Wang, Chuin-Mu;Chen, Clayton Chi-Chang;Chung, Yi-Nung;Yang, Sheng-Chih;Chung, Pau-Choo;Yang, Ching-Wen;Chang, Chein-I.
Contributors:	電機工程學系
Date:	2003-01
Issue Date:	2012-07-02T02:06:25Z
Publisher:	IEEE
Abstract:	This paper presents a new spectral signature detection approach to magnetic resonance (MR) image classification. It is called constrained energy minimization (CEM) method, which is derived fromthe minimum variance distortionless response in passive sensor array processing. It considers a bank of spectral channels as an array of sensors where each spectral channel represents a sensor and object spectral signature in multispectral MR images are viewed as signals impinging upon the array. The strength of the CEM lies on its ability in detection of spectral signatures of interest without knowing image background. The detected spectral signatures are then used for classification. The CEM makes use of a finite impulse response (FIR) filter to linearly constrain a desired object while minimizing interfering effects caused by other unknown signal sources. Unlike most spatial-based classification techniques, the proposed CEM takes advantage of spectral characteristics to achieve object detection and classification. A series of experiments is conducted and compared with the commonly used-means method for performance evaluation. The results showthat the CEM method is a promising and effective spectral technique for MR image classification.
Relation:	IEEE Tran. on Medical Imaging, 22(1): 50-61
Appears in Collections:	[Department and Graduate Institute of Electronic Engineering] Periodical Articles

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