Experimental assessment of rectification algorithm in vision-based deflection measurement system

被引：11

作者：

Kohut, Piotr ^{[1
]}

Holak, Krzysztof ^{[1
]}

Martowicz, Adam ^{[1
]}

Uhl, Tadeusz ^{[1
]}

机构：

[1] AGH Univ Sci & Technol, Dept Robot & Mechatron, Krakow, Poland

来源：

NONDESTRUCTIVE TESTING AND EVALUATION | 2017年 / 32卷 / 02期

关键词：

Vision-based measurement; homography; deflection; rectification algorithm; IMPACT DAMAGE DETECTION; IMAGE-CORRELATION;

D O I：

10.1080/10589759.2016.1159306

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An uncertainty assessment of a vision-based method for the measurement of a structure's in-plane deflection is presented. In the investigated approach, the displacements of measurement points in the structure under load are computed by means of digital image correlation. The application of homography mapping enables the deflection field to be computed from two images of the structure acquired from distinct points in space. The impact of the camera's pose and changes in focal length on the performance of the developed vision algorithm is investigated. The paper presents and discusses the influence of rectification algorithm on the quality of the vision-based measurement system as well.

引用

页码：200 / 226

页数：27

共 50 条

[1]

[Anonymous], 2001, Robotica, DOI DOI 10.1017/S0263574700223217

[2] Mechanical identification of layer-specific properties of mouse carotid arteries using 3D-DIC and a hyperelastic anisotropic constitutive model [J].