Open AccessA correspondence finding method based on space conversion in 3D shape measurement using fringe projection
Author(s) -
Yong Liu
Publication year - 2015
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.23.014188
Subject(s) - projector , structured light 3d scanner , computer science , projection (relational algebra) , point (geometry) , optics , computer vision , space (punctuation) , artificial intelligence , phase (matter) , phase retrieval , coordinate system , algorithm , mathematics , physics , geometry , fourier transform , mathematical analysis , scanner , quantum mechanics , operating system
Phase correlation is an effective method used for 3D shape measurement. It has a defect in the step of finding corresponding points. This work analyses the complexity of phase maps and the problems caused by it in real applications, proposes a correspondence finding method based on space conversion. Applying space conversion, two sets of phase maps from two cameras are integrated to a unique phase space. Accordingly, searching corresponding point between two images can be carried out in the same image coordinate system of the projector. As a supplementary, two algorithms are given for CC method and VR method. Experimental results show that proposed algorithms are successful and effective.