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Proceedings Paper

Automated registration of polarimetric imagery using Fourier transform techniques
Author(s): Christopher M. Persons; David B. Chenault; Michael W. Jones; Kevin Deane Spradley; Michael G. Gulley; Craig Alan Farlow
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Paper Abstract

Polarimetric imagery that is collected from time-sequential and multiple image format sensors all have potential for image misregistration. Since polarization is usually measured as small differences between radiometric measurements, it is highly sensitive to misregistration, especially at regions of high contrast. The general consensus in the polarization community is that image misregistration on the order of 1/10th of a pixel can introduce artifacts in polarization images. If the registration is not achieved and maintained to this resolution, the data must be registered in software. Typically, rotation and translation (horizontal and vertical) are the main transformations that need to be corrected. It is desirable to have a registration algorithm that determines rotations and translations to 1/10th of a pixel, does not require user intervention, takes minimal computation time, and is based on analytical (non-iterative), automated calculations. This paper details an analytical, automated registration algorithm that corrects for rotation and translations by using a Fourier transform technique. Examples of images registered with this algorithm, and estimates of residual misregistrations are presented. Typical processing times are also given.

Paper Details

Date Published: 25 September 2002
PDF: 11 pages
Proc. SPIE 4819, Polarization Measurement, Analysis, and Applications V, (25 September 2002); doi: 10.1117/12.450935
Show Author Affiliations
Christopher M. Persons, L-3 Communications Corp., Inc. (United States)
David B. Chenault, L-3 Communications Corp., Inc. (United States)
Michael W. Jones, L-3 Communications Corp., Inc. (United States)
Kevin Deane Spradley, L-3 Communications Corp., Inc. (United States)
Michael G. Gulley, L-3 Communications Corp., Inc. (United States)
Craig Alan Farlow, L-3 Communications Corp., Inc. (United States)


Published in SPIE Proceedings Vol. 4819:
Polarization Measurement, Analysis, and Applications V
Dennis H. Goldstein; David B. Chenault, Editor(s)

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