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Proceedings Paper

Built-in hyperspectral camera for smartphone in visible, near-infrared and middle-infrared lights region (third report): spectroscopic imaging for broad-area and real-time componential analysis system against local unexpected terrorism and disasters
Author(s): Satsuki Hosono; Natsumi Kawashima; Dirk Wollherr; Ichiro Ishimaru
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Paper Abstract

The distributed networks for information collection of chemical components with high-mobility objects, such as drones or smartphones, will work effectively for investigations, clarifications and predictions against unexpected local terrorisms and disasters like localized torrential downpours. We proposed and reported the proposed spectroscopic line-imager for smartphones in this conference. In this paper, we will mention the wide-area spectroscopic-image construction by estimating 6 DOF (Degrees Of Freedom: parallel movements=x,y,z and rotational movements=θx, θy, θz) from line data to observe and analyze surrounding chemical-environments. Recently, smartphone movies, what were photographed by peoples happened to be there, had worked effectively to analyze what kinds of phenomenon had happened around there. But when a gas tank suddenly blew up, we did not recognize from visible-light RGB-color cameras what kinds of chemical gas components were polluting surrounding atmospheres. Conventionally Fourier spectroscopy had been well known as chemical components analysis in laboratory usages. But volatile gases should be analyzed promptly at accident sites. And because the humidity absorption in near and middle infrared lights has very high sensitivity, we will be able to detect humidity in the sky from wide field spectroscopic image. And also recently, 6-DOF sensors are easily utilized for estimation of position and attitude for UAV (Unmanned Air Vehicle) or smartphone. But for observing long-distance views, accuracies of angle measurements were not sufficient to merge line data because of leverage theory. Thus, by searching corresponding pixels between line spectroscopic images, we are trying to estimate 6-DOF in high accuracy.

Paper Details

Date Published: 12 May 2016
PDF: 7 pages
Proc. SPIE 9855, Next-Generation Spectroscopic Technologies IX, 985506 (12 May 2016); doi: 10.1117/12.2223409
Show Author Affiliations
Satsuki Hosono, Kagawa Univ. (Japan)
Natsumi Kawashima, Kagawa Univ. (Japan)
Dirk Wollherr, Technische Univ. München (Germany)
Ichiro Ishimaru, Kagawa Univ. (Japan)

Published in SPIE Proceedings Vol. 9855:
Next-Generation Spectroscopic Technologies IX
Mark A. Druy; Richard A. Crocombe, Editor(s)

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