Assessment of speckle-pattern quality in digital image correlation based on gray intensity and speckle morphology

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• 作者：Jihyuk Park^a ; Sungsik Yoon^a ; Tae-Hyun Kwon^b ; Kyoungsoo Park^a ; ^{k-park@yonsei.ac.kr}
• 关键词：Speckle-pattern quality ; Digital image correlation ; Deformation measurement ; Gray intensity ; Speckle morphology
• 刊名：Optics and Lasers in Engineering
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：91
• 期：Complete
• 页码：62-72
• 全文大小：1721 K
• 卷排序：91

文摘

Speckle-pattern quality measurement is proposed for digital image correlation. The proposed measurement utilizes features of gray intensity and speckle morphology. The proposed measurement is inversely proportional to the image correlation error. The statistical significance is confirmed by evaluating the p-value.