A modified digital image correlation with enhanced speed and improved accuracy

Bang-Jian Li; Quan-Bao Wang; Deng-Ping Duan

doi:10.1117/12.2266723

10 February 2017 A modified digital image correlation with enhanced speed and improved accuracy

Bang-Jian Li, Quan-Bao Wang, Deng-Ping Duan

Proceedings Volume 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016); 102502O (2017) https://doi.org/10.1117/12.2266723
Event: Fourth International Conference on Optical and Photonics Engineering, 2016, Chengdu, China

Abstract

Digital image correlation (DIC) is widely applied in optical measurement field. In this work, the classical DIC algorithm is modified to improve the speed and enhance the measurement accuracy. A Butterworth function is installed on the traditional sum-of-squared differences correlation criterion. And inverse compositional Gauss-Newton is carried out. The computer generated speckle patterns are used to demonstrate the presented algorithm. The results declare the proposed method can improve the speed with enhanced measurement accuracy.

Citation Download Citation

Bang-Jian Li, Quan-Bao Wang, and Deng-Ping Duan "A modified digital image correlation with enhanced speed and improved accuracy", Proc. SPIE 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016), 102502O (10 February 2017); https://doi.org/10.1117/12.2266723

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