Share Email Print

Proceedings Paper

Power spectra trends in imaging polarimetry of outdoor solar illuminated scenes
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The 1=∫2 power law (where ∫ is spatial frequency) characterizes the spatial power spectrum of non-polarimetric images of outdoor scenes when averaged over an appropriately large ensemble. This empirical result has been repeatedly verified in diverse imaging applications. In this work we compare the ensemble-averaged power spectrum of radiance and polarized radiance images. Outdoor scenes have been imaged over the past three-years using JPL's Ground-based Multiangle SpectroPolarimetric Imager (Ground-MSPI)[1] at the University of Arizona (UA). Ground-MSPI is an eight-band spectropolarimetric camera mounted on a rotating gimbal to acquire pushbroom imagery of solar illuminated outdoor landscapes. This Ground-MSPI image library offers a unique opportunity to quantify the statistical trends between polarimetric and non-polarimetric measurements. From power spectrum analysis of 1,975 images in our collection we report that the magnitude of the 1=∫-exponent is lower for the polarized radiance image than the corresponding radiance image. This result quantifies the contrast mechanism difference for imaging polarimetry, indicates higher spatial frequency content in passive polarimetry of outdoor environments, and supports the assertion that polarimetry offers unique detection capabilities.

Paper Details

Date Published: 4 May 2016
PDF: 5 pages
Proc. SPIE 9853, Polarization: Measurement, Analysis, and Remote Sensing XII, 98530P (4 May 2016); doi: 10.1117/12.2228265
Show Author Affiliations
Meredith Kupinski, College of Optical Sciences, The Univ. of Arizona (United States)
Russell Chipman, College of Optical Sciences, The Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 9853:
Polarization: Measurement, Analysis, and Remote Sensing XII
David B. Chenault; Dennis H. Goldstein, Editor(s)

© SPIE. Terms of Use
Back to Top