Lens distortion correction for digital image correlation by measuring rigid body displacement

Saturu Yoneyama; Hisao Kikuta; Akikazu KitagawaKoji Kitamura

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Lens distortion correction for digital image correlation by measuring rigid body displacement

机译：Lens distortion correction for digital image correlation by measuring rigid body displacement

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摘要

A method of lens distortion correction is proposed in order to improve the measurement accuracy of digital image correlation for two-dimensional displacement measurement. The amounts of lens distortion are evaluated from displacement distributions obtained in a rigid body in-plane translation or rotation test. After detecting the lens distortion, its coefficient is determined using the method of least squares. Then, the corrected displacement distributions are obtained. The effectiveness of the proposed method is demonstrated by applying the correction method to an in-plane translation test and tension tests. The experimental results show that the proposed distortion correction method eliminates the effect of lens distortion from measured displacements.

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来源
《Optical Engineering》 |2006年第2期|023602-1-023602-9-0|共9页
作者
Saturu Yoneyama; Hisao Kikuta; Akikazu KitagawaKoji Kitamura;
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作者单位

Osaka Prefecture University Department of Mechanical Engineering 1-1 Gakuen-cho, Sakai Osaka 599-8531, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学仪器;
关键词
displacement measurement; digital image correlation; lens distortion; translation; rotation; optical methods; experimental mechanics;

Lens distortion correction for digital image correlation by measuring rigid body displacement

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