Open AccessHigh-speed triangular pattern phase-shifting 3D measurement based on the motion blur method
Author(s) -
Haitao Zhao,
Xiaochun Diao,
Hongzhi Jiang,
Xudong Li
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.009171
Subject(s) - structured light 3d scanner , dither , digital light processing , projector , grayscale , computer science , computer vision , artificial intelligence , optics , motion blur , phase (matter) , digital micromirror device , high speed photography , phase unwrapping , digital holography , projection (relational algebra) , binary number , image (mathematics) , holography , physics , algorithm , mathematics , interferometry , scanner , arithmetic , quantum mechanics , noise shaping
Recent advancements in 3D measurement technologies have increased the urgency of requiring high-speed 3D measurement in many fields. This study presents a novel four-step triangular pattern phase-shifting 3D measurement using the motion blur method, which combines the advantages of phase-shifting methods. To comply with the high speed requirement, binary coded triangular patterns are projected and could dither vertically. Therefore, the image captured by the camera is blurred into grayscale-intensity triangular patterns, which can be used for phase unwrapping and 3D reconstruction. The proposed method decreased the projection time compared with sinusoidal patterns using a DMD (digital micromirror device) projector. Furthermore, this study presents a four-step triangular phase-shifting unwrapping algorithm. The experiments indicate that the proposed method can achieve high-speed 3D measurement and reconstruction.