Open AccessBroadband near-infrared hyperspectral single pixel imaging for chemical characterization
Author(s) -
Paul Gattinger,
Jakob Kilgus,
Ivan Zorin,
Gregor Langer,
Ramin NikzadLangerodi,
Christian Rankl,
Martin Gröschl,
Markus Brandstetter
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.012666
Subject(s) - hyperspectral imaging , chemical imaging , optics , full spectral imaging , spectral imaging , materials science , infrared , spectral resolution , pixel , imaging spectroscopy , spectrometer , near infrared spectroscopy , image resolution , overtone , remote sensing , optoelectronics , physics , spectral line , geology , astronomy
We introduce a compressive sensing based approach for single pixel hyperspectral chemical imaging in a broad spectral range in the near-infrared. Fully integrated MEMS based Fabry-Pérot tunable filter spectrometers and a digital micro-mirror device were employed to achieve spectral and spatial resolution, respectively. The available spectral range from 1500 to 2200 nm covers molecular overtone vibrations enabling chemical identification. Hyperspectral images of different adhesives deposited on a textile were recorded revealing their chemical composition. Furthermore, spectrally resolved near-infrared images with compression rates up to 90% are presented. The approach of single pixel imaging illustrates a promising technology for the infrared spectral range superior to conventionally used costly focal plane arrays.