Accuracy enhancement of digital image correlation with B-spline interpolation

被引：122

作者：

Luu, Long ^{[1
,2
]}

Wang, Zhaoyang ^{[1
]}

Vo, Minh ^{[1
,2
]}

Hoang, Thang ^{[1
]}

Ma, Jun ^{[1
]}

机构：

[1] Catholic Univ Amer, Dept Mech Engn, Washington, DC 20064 USA

[2] Catholic Univ Amer, Dept Elect Engn, Washington, DC 20064 USA

来源：

OPTICS LETTERS | 2011年 / 36卷 / 16期

基金：

美国国家科学基金会;

关键词：

REGISTRATION;

D O I：

10.1364/OL.36.003070

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The interpolation algorithm plays an essential role in the digital image correlation (DIC) technique for shape, deformation, and motion measurements with subpixel accuracies. At the present, little effort has been made to improve the interpolation methods used in DIC. In this Letter, a family of recursive interpolation schemes based on B-spline representation and its inverse gradient weighting version is employed to enhance the accuracy of DIC analysis. Theories are introduced, and simulation results are presented to illustrate the effectiveness of the method as compared with the common bicubic interpolation. (C) 2011 Optical Society of America

引用

页码：3070 / 3072

页数：3

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