Document Detail

Novel calibration method for structured-light system with an out-of-focus projector.
MedLine Citation:
PMID:  24922416     Owner:  NLM     Status:  Publisher    
A structured-light system with a binary defocusing technique has the potential to have more extensive application due to its high speeds, gamma-calibration-free nature, and lack of rigid synchronization requirements between the camera and projector. However, the existing calibration methods fail to achieve high accuracy for a structured-light system with an out-of-focus projector. This paper proposes a method that can accurately calibrate a structured-light system even when the projector is not in focus, making it possible for high-accuracy and high-speed measurement with the binary defocusing method. Experiments demonstrate that our calibration approach performs consistently under different defocusing degrees, and a root-mean-square error of about 73 μm can be achieved with a calibration volume of 150(H) mm×250(W) mm×200(D)mm.
Beiwen Li; Nikolaus Karpinsky; Song Zhang
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Publication Detail:
Journal Detail:
Title:  Applied optics     Volume:  53     ISSN:  1539-4522     ISO Abbreviation:  Appl Opt     Publication Date:  2014 Jun 
Date Detail:
Created Date:  2014-6-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  -    
Other Details:
Languages:  ENG     Pagination:  3415-3426     Citation Subset:  -    
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