Research progress of DSCM in sub-pixel level measurement

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Xu, Xinghua^1

College of Business Administration, Guizhou University of Finance and Economics, Guiyang, Guizhou, China^1

关键词: Computational speed;    Digital speckle correlation method;    Gaussian newtons;    Measurement accuracy;    Non-contact;    Optical measurement methods;    Research status;    Sub pixels;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/4/042004/pdf
DOI  :  10.1088/1757-899X/490/4/042004

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The digital speckle correlation method (DSCM) is a full-field and non-contact optical measurement method. This paper analyzes the research status of the sub-pixel algorithm in DSCM, and analyzes the research progress and data of the algorithm. The inverse compositional Gaussian-Newton algorithm (IC-GN) has obvious advantages. The conclusion is that the inverse compositional Gaussian-Newton algorithm has obvious comprehensive advantages over traditional sub-pixel algorithms in terms of measurement accuracy and computational speed.