Open AccessHigh-speed 3D shape measurement using a rotary mechanical projector
Author(s) -
Yihang Liu,
Qican Zhang,
Yuankun Liu,
Yu Xin,
Yanli Hou,
Wenjing Chen
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.419206
Subject(s) - projector , computer science , observational error , optics , projection (relational algebra) , structured light , structured light 3d scanner , binary number , high speed photography , artificial intelligence , algorithm , mathematics , physics , statistics , arithmetic , scanner
In this paper, a fast rotary mechanical projector (RMP) is designed and manufactured for high-speed 3D shape measurement. Compared with the common high-speed projectors, RMP has a good performance in high-speed projection, which can obtain high quality projected fringes with shorter camera exposure time by using the error diffusion binary coding method and chrome plating technology. The magnitude, acceptability of systemic projection error is analyzed and quantified in detail. For the quantified error, the probability distribution function (PDF) algorithm is introduced to correct the error. Corrected projection error is reduced to more than one third of the original error. Subsequently, a monocular measurement system composed of the RMP and a single camera is constructed. The combination of the RMP device and PDF algorithm ensure the accuracy of a corresponding 3D shape measurement system. Experiments have demonstrated that the proposed solution has a good performance for the 3D measurement of high-speed scenes.