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

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題名:	An automatic evaluation system for contrast-detail phantom images in digital radiography
作者:	林智揚;Lin, Chuen-Horng;Lin, Chih-Yang;Cheng, Yu-Jung;Chan, Yung-Kuan
貢獻者:	工學院機械工程學系
關鍵詞:	bilinear pixel interpolation;contrast-detail phantom;region shifting
日期:	2012-01-01
上傳時間:	2026-04-23 14:43:05 (UTC+8)
出版者:	John Wiley and Sons Inc.;New York: Blackwell Publishing Ltd
摘要:	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
顯示於類別:	[機械工程學系] 期刊論文

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