Multi-scale measurement of high-reflective surfaces by integrating near-field photometric stereo with touch trigger probe

Mingjun Ren, Jieji Ren, Xi Wang, Feng Gao, Limin Zhu, Zhenqiang Yao

Research output: Contribution to journalArticle

Abstract

Precision measurement of large scale surface topography is a challenging task for high-reflective parts. This paper presents a multi-sensor system to address this issue by integrating the technical merits of touch trigger probe and photometric stereo. The probe is used to extract a set of high-precision sparse points for an initial surface construction, which is then applied to drive a near-field photometric stereo for recovering dense surface normal of the surface. By fusing the sparse discrete points with the dense surface normal, high-resolution surface topography can be obtained accordingly. Experiments confirm the state-of-the-art performance of the proposed method.

Original languageEnglish
Pages (from-to)489-492
Number of pages4
JournalCIRP Annals
Volume69
Issue number1
Early online date16 May 2020
DOIs
Publication statusPublished - 1 Jun 2020

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