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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 27 — Sep. 20, 2011
  • pp: 5235–5242

Image rotation and translation measurement based on double phase-encoded joint transform correlator

Peng Ge, Qi Li, Huajun Feng, and Zhihai Xu  »View Author Affiliations


Applied Optics, Vol. 50, Issue 27, pp. 5235-5242 (2011)
http://dx.doi.org/10.1364/AO.50.005235


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Abstract

An image rotation and translation measurement technology based on a double phase-encoded joint transform correlator (DPEJTC) is proposed. The reference and the target images are Fourier transformed. Then the magnitude of the Fourier-transformed reference (MFR) and target (MFT) images are multiplied with a high-pass emphasis filter and transformed from Cartesian space into polar space. Rotation between the reference and the target image is obtained by measuring the emphasized MFR and MFT in polar coordinates by the DPEJTC. The target image is rotated by the rotation angle in the inverse orientation to get the rotation-correction target image. Finally, translation between the reference and the target image is obtained through measuring the reference and the rotation-correction target image by the DPEJTC. Results based on digital computation are given to verify our proposal. A possible optical setup is suggested.

© 2011 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(100.0100) Image processing : Image processing
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: April 11, 2011
Revised Manuscript: May 28, 2011
Manuscript Accepted: July 1, 2011
Published: September 14, 2011

Citation
Peng Ge, Qi Li, Huajun Feng, and Zhihai Xu, "Image rotation and translation measurement based on double phase-encoded joint transform correlator," Appl. Opt. 50, 5235-5242 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-27-5235

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