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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 9 — May. 1, 2013
  • pp: 1446–1448

Camera calibration with active phase target: improvement on feature detection and optimization

Lei Huang, Qican Zhang, and Anand Asundi  »View Author Affiliations

Optics Letters, Vol. 38, Issue 9, pp. 1446-1448 (2013)

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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.

© 2013 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(150.0150) Machine vision : Machine vision
(150.1488) Machine vision : Calibration

ToC Category:
Machine Vision

Original Manuscript: February 12, 2013
Revised Manuscript: March 29, 2013
Manuscript Accepted: April 1, 2013
Published: April 25, 2013

Lei Huang, Qican Zhang, and Anand Asundi, "Camera calibration with active phase target: improvement on feature detection and optimization," Opt. Lett. 38, 1446-1448 (2013)

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