Three-dimensional reconstruction from a fringe projection system through a planar transparent medium

Chao Chen, Huaiwen Wang, Zonghua Zhang, Feng Gao

Research output: Contribution to journalArticlepeer-review

Abstract

A vision measurement system is placed in a protective cover made of a transparent medium to avoid environmental influences. Due to the deflection of light rays on the front and rear surfaces of the transparent medium, the imaging position of an object on the camera target plane is deviated, which makes the traditional vision detection methods based on the triangulation principle produce large measurement errors. This work introduces a three-dimensional (3D) reconstruction method by fringe projection system through a planar transparent medium. We derive the coordinate transformation relationship between a real-object point and a pseudo-object point caused by light refraction based on Snell’s law of flat refraction. Based on the relationship, a modified fringe projection method is proposed for unbiased 3D reconstruction. Two experiments, including 3D shape measurement of a white plate with ring markers and 3D shape measurement of a regular spherical object are conducted. The results demonstrate the effectiveness of the proposed method in such measurement environment.
Original languageEnglish
Pages (from-to)34824-34834
Number of pages11
JournalOptics Express
Volume30
Issue number19
Early online date8 Sep 2022
DOIs
Publication statusPublished - 12 Sep 2022

Fingerprint

Dive into the research topics of 'Three-dimensional reconstruction from a fringe projection system through a planar transparent medium'. Together they form a unique fingerprint.

Cite this