重庆理工大学学报（自然科学版）2017，Vol.31Issue(9)：110-118,9.DOI:10.3969/j.issn.1674-8425(z).2017.09.018
三维数字图像相关法的匹配策略和应变场计算
Study on Stereo Matching Strategy and 3-D Strain Computation in Three-Dimensional Digital Image Correlation
摘要
Abstract
In three-dimensional Digital Image Correlation (DIC),there are two different matching strategies in the process of three-dimensional reconstruction.This paper summarizes the application of these two matching strategies in different scenarios by using the three-dimensional simulation speckle maps to simulate the deformation.There are two methods to calculate the three-dimensional displacement field and to calculate the displacement field directly.The two methods have the disadvantages of ignoring the local feature and removing the noise.In order to obtain the strain field with high precision,the strain calculation method of the micro unit body based on the least squares fitting is used in the calculation of three-dimensional strain fields.The Simulation analysis results show that the strain field precision obtained by using this strain calculation method is reliable.关键词
三维数字图像相关法/双目视觉/匹配策略/三维应变场Key words
three-dimensional DIC/binocular stereo vision/match strategy/three-dimensional strain computation分类
信息技术与安全科学引用本文复制引用
夏瀚笙,沈峘,王莹,刘敦强..三维数字图像相关法的匹配策略和应变场计算[J].重庆理工大学学报（自然科学版）,2017,31(9):110-118,9.基金项目
航空科学基金资助项目(20120952022) （20120952022）
