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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 14 — Jul. 2, 2012
  • pp: 14906–14920

Computational optical distortion correction using a radial basis function-based mapping method

Aaron Bauer, Sophie Vo, Keith Parkins, Francisco Rodriguez, Ozan Cakmakci, and Jannick P. Rolland  »View Author Affiliations


Optics Express, Vol. 20, Issue 14, pp. 14906-14920 (2012)
http://dx.doi.org/10.1364/OE.20.014906


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Abstract

A distortion mapping and computational image unwarping method based on a network interpolation that uses radial basis functions is presented. The method is applied to correct distortion in an off-axis head-worn display (HWD) presenting up to 23% highly asymmetric distortion over a 27°x21° field of view. A 10−5 mm absolute error of the mapping function over the field of view was achieved. The unwarping efficacy was assessed using the image-rendering feature of optical design software. Correlation coefficients between unwarped images seen through the HWD and the original images, as well as edge superimposition results, are presented. In an experiment, images are prewarped using radial basis functions for a recently built, off-axis HWD with a 20° diagonal field of view in a 4:3 ratio. Real-time video is generated by a custom application with 2 ms added latency and is demonstrated.

© 2012 OSA

OCIS Codes
(100.0100) Image processing : Image processing
(120.2820) Instrumentation, measurement, and metrology : Heads-up displays

ToC Category:
Image Processing

History
Original Manuscript: April 17, 2012
Revised Manuscript: June 4, 2012
Manuscript Accepted: June 5, 2012
Published: June 19, 2012

Citation
Aaron Bauer, Sophie Vo, Keith Parkins, Francisco Rodriguez, Ozan Cakmakci, and Jannick P. Rolland, "Computational optical distortion correction using a radial basis function-based mapping method," Opt. Express 20, 14906-14920 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-14-14906


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