Document Detail

Camera calibration with active phase target: improvement on feature detection and optimization.
MedLine Citation:
PMID:  23632513     Owner:  NLM     Status:  In-Data-Review    
The calibration of camera with intrinsic and extrinsic parameters is a procedure of significance in current imaging-based optical metrology. Improvement at two aspects, feature detection and overall optimization, are investigated here by using an active phase target and statistically constrained bundle adjustment (SCBA). From the observations in experiment and simulation, the feature detection can be enhanced by "virtual defocusing" and windowed polynomial fitting if sinusoidal fringe patterns are used as the active phase target. SCBA can be applied to avoid the difficult measurement of the active target. As a typical calibration result in our experiment, the root mean square of reprojection error can be reduced to 0.0067 pixels with the proposed method.
Lei Huang; Qican Zhang; Anand Asundi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics letters     Volume:  38     ISSN:  1539-4794     ISO Abbreviation:  Opt Lett     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-05-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708433     Medline TA:  Opt Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1446-8     Citation Subset:  IM    
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