Share Email Print
cover

Proceedings Paper

Real-time sub-pixel registration of imagery for an IR polarimeter
Author(s): Jonathan B. Hanks; J. Larry Pezzaniti; David B. Chenault; João M. Romano
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In imaging polarimetry, special consideration must be given to ensure proper spatial registration between frames. Edge artifacts caused by the differencing of unregistered frames has the potential to create significant spurious polarization signatures. To achieve 1/10th pixel registration or better, a software based registration approach is often required. The focus of this paper is to present an efficient algorithm for real time sub-pixel registration in a division-of-time IR polarimeter based on a rotating polarizer. This algorithm has been implemented in a commercially available rotating polarizer LWIR imaging polarimeter offered by Polaris Sensor Technologies. This paper presents measurements of image nutation in a rotating polarizer LWIR imaging polarimeter and real-time registration of image data from that same polarimeter. The registration algorithm is based on an optimal 2D convolution. Examples of registered images are provided as well as estimates of residual misregistration artifacts.

Paper Details

Date Published: 8 June 2012
PDF: 14 pages
Proc. SPIE 8364, Polarization: Measurement, Analysis, and Remote Sensing X, 83640C (8 June 2012); doi: 10.1117/12.921039
Show Author Affiliations
Jonathan B. Hanks, Polaris Sensor Technologies, Inc. (United States)
J. Larry Pezzaniti, Polaris Sensor Technologies, Inc. (United States)
David B. Chenault, Polaris Sensor Technologies, Inc. (United States)
João M. Romano, U.S. Army Armament Research, Development and Engineering Ctr. (United States)


Published in SPIE Proceedings Vol. 8364:
Polarization: Measurement, Analysis, and Remote Sensing X
David B. Chenault; Dennis H. Goldstein, Editor(s)

© SPIE. Terms of Use
Back to Top