Open AccessNovel 3D measurement system based on speckle and fringe pattern projection
Author(s) -
Shaoyan Gai,
Feipeng Da,
Xianqiang Dai
Publication year - 2016
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.24.017686
Subject(s) - speckle pattern , structured light 3d scanner , optics , projection (relational algebra) , phase (matter) , speckle noise , computer science , phase retrieval , point (geometry) , pixel , artificial intelligence , computer vision , algorithm , mathematics , physics , geometry , fourier transform , mathematical analysis , scanner , quantum mechanics
An efficient three-dimensional shape measurement system is proposed, which is based on the combining projection of single digital speckle pattern and phase-shifting fringe patterns. At the beginning, the initial corresponding point for each pixel is obtained by a novel speckle-phase combination method. The initial information can be calculated by the single speckle pattern in a short time, while the phase information is used to ensure the results. Unlike the conventional methods, it is not necessary to obtain the unwrapped phase, therefore the number of projected patterns is reduced greatly. Then accurate corresponding coordinates are obtained according to the wrapped phase. Three cases are analyzed while adjusting the initial corresponding coordinates locally. Thus accuracy coordinates are obtained without missing or incorrect points. Experiments demonstrate that we can achieve accurate reconstruction results with reduced measurement time by the proposed method.