An automatic evaluation system for contrast-detail phantom images in digital radiography

NCUIR > Engineering College > Departmant of Mechanical Engineering > journal & Dissertation > Item 987654321/108313

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/108313

Title:	An automatic evaluation system for contrast-detail phantom images in digital radiography
Authors:	林智揚;Lin, Chuen-Horng;Lin, Chih-Yang;Cheng, Yu-Jung;Chan, Yung-Kuan
Contributors:	工學院機械工程學系
Keywords:	bilinear pixel interpolation;contrast-detail phantom;region shifting
Date:	2012-01-01
Issue Date:	2026-04-23 14:43:05 (UTC+8)
Publisher:	John Wiley and Sons Inc.;New York: Blackwell Publishing Ltd
Abstract:	摘要： Currently, contrast‐detail phantom (CD phantom) images are widely used to assist medical experts for diagnosis, because these images can be used to study imaging quality and assess the radiation dose amount for digital X‐ray imaging systems. However, the quality of the CD phantom image varies from person to person, increasing the possibility of false diagnosis. In this article, we propose an automatic evaluation system to measure the quality of a phantom image an alternative to assessment by radiologists. The proposed method is based on bilinear pixel interpolation, geometric transformation, and region shifting to efficiently and objectively evaluate the quality of a phantom image. Moreover, misjudgment modification is also proposed to further improve the recognition accuracy. The experimental results show that the accuracy of the proposed method is very close to that of the radiologists observations. The results have also proven that the proposed method is a feasible way to evaluate the quality of a phantom image in an objective and automatic manner. 其他題名： Int. J. Imaging Syst. Technol 出版者： New York: Blackwell Publishing Ltd 出版日期： 2012-11 出處： International journal of imaging systems and technology, 2012-11, Vol.22 (4), p.15-26 資源來源： Wiley Online Library - AutoHoldings Journals 版權： Copyright © 2012 Wiley Periodicals, Inc. 識別號： ISSN: 0899-9457 識別號： EISSN: 1098-1098 識別號： DOI: 10.1002/ima.22025
Appears in Collections:	[Departmant of Mechanical Engineering ] journal & Dissertation

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