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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 5 — Mar. 1, 2011
  • pp: 763–765

Subpixel image registration with reduced bias

Wei Tong  »View Author Affiliations


Optics Letters, Vol. 36, Issue 5, pp. 763-765 (2011)
http://dx.doi.org/10.1364/OL.36.000763


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Abstract

A backward linear digital image correlation algorithm was introduced to obtain subpixel image registration without noise-induced bias for an image set consisting of a noise-free reference image and a number of noisy current images. Furthermore, a correction procedure using additional reference images (generated by offsetting the original image to displacement increments of either half-pixels or even quarter-pixels) was proposed to reduce subpixel approximation bias in the analysis. Numerical results of six sets of synthetic images showed that the proposed algorithm was effective in improving the accuracy of subpixel image registration.

© 2011 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(150.4620) Machine vision : Optical flow
(330.4150) Vision, color, and visual optics : Motion detection
(100.4999) Image processing : Pattern recognition, target tracking

ToC Category:
Image Processing

History
Original Manuscript: November 22, 2010
Revised Manuscript: January 24, 2011
Manuscript Accepted: January 27, 2011
Published: March 1, 2011

Citation
Wei Tong, "Subpixel image registration with reduced bias," Opt. Lett. 36, 763-765 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-5-763

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