Development of spectropolarimetric imagers for imaging of desert soils

Author

Gupta, Neelam

Author_Institution

U.S. Army Res. Lab., Adelphi, MD, USA

fYear

2014

fDate

14-16 Oct. 2014

Firstpage

1

Lastpage

7

Abstract

There is much interest in imaging of desert soils to understand their mineral composition, grain sizes and orientations for various civilian and military applications. We discuss the development of two novel field-portable spectropolarimetric imagers based on acousto-optic tunable filter (AOTF) technology in the visible near-infrared (VNTR) and shortwave infrared (SWIR) wavelength regions. The first imager covers a spectral region from 450 to 800 nm with a bandwidth of 5 nm at 633 nm and the second from 1000 to 1600 nm with a bandwidth of 15 nm at 1350 nm. These imagers will be used in field tests. In this paper, we discuss salient aspect of spectropolarimetric imager development and present some data collected with them.

Keywords

acousto-optical filters; geophysical equipment; hyperspectral imaging; image sensors; polarimetry; soil; spectrophotometry; AOTF technology; SWIR wavelength region; VNTR wavelength region; acousto-optic tunable filter; desert soil grain sizes; desert soil imaging; desert soil mineral composition; desert soil orientations; field-portable spectropolarimetric imagers; shortwave infrared wavelength; spectropolarimetric imager development; visible near-infrared wavelength; wavelength 1000 nm to 1600 nm; wavelength 450 nm to 800 nm; Cameras; Crystals; Hyperspectral imaging; Optical filters; Optical imaging; Optical polarization; AOTF; Hyperspectral; SWIR; Stokes polarization; TeO2; VNIR; acousto-optic tunable filter; imager; polarization; soil imaging; spectropolarimetric;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Imagery Pattern Recognition Workshop (AIPR), 2014 IEEE

Conference_Location

Washington, DC

Type

conf

DOI

10.1109/AIPR.2014.7041908

Filename

7041908