Rapid non-contact visual measurement method for key dimensions of revolving workpieces

International journal of metrology and quality engineering

article

Peipei Gao¹  Feng Liu²  Xizhi Sun³  Fang Wang³  Jiajun Li² 

[1]Nankai University, College of Computer Science

[2]Tianjin University, State Key Lab Precision Measuring Technology & Instruments

[3]Brunel University London, College of Engineering Design and Physical Sciences

关键词: Computer vision;    revolving workpiece;    real-time;    non-contact measurement;   

DOI  :  10.1051/ijmqe/2021008

学科分类：土木及结构工程学

来源: EDP Sciences

【 摘 要 】

Aimed at the rapid non-contact measurement problem of a revolving workpiece’s radial and axial dimensions, a fast and high-precision visual inspection method has been presented in this paper. For the workpiece with large axial size, the proposed method established the measurement transformation chain using the object-image and object-object transformations, thus realizing the rapid axial dimensional measurements. For the workpiece with large radial size, this method determined the measurement transformation model based on two-dimensional target and measurement correspondence relationship, and further achieved rapid radial dimensional measurements. The experimental results have shown that the method is effective and can be applied to in situ dimensional measurement of revolving workpieces on high quality production lines.

【 授权许可】

CC BY