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DOI码：10.1016/j.optlaseng.2023.107679
发表刊物：Optics and Lasers in Engineering
摘要：The low-pass filtering effect, which stems from undermatching of shape function, sincerely affects the metrological performance of digital image correlation, especially for localized deformations. Here, we build a theoretical model characterizing the low-pass filtering effect, which explicitly expresses the measured displacement in terms of subset size, shape function order, and underlying deformation field. Based on the model, we derive formulae for transfer function of digital image correlation and study the attenuation of Gaussian displacement fields. These results provide a deep insight into shape function undermatching and open up new possibilities for compensating the low-pass filtering effect.
第一作者：Yong Su
论文类型：期刊论文
论文编号：107679
文献类型：J
卷号：168
是否译文：否
发表时间：2023-05-23
收录刊物：SCI