Compact and robust hyperspectral camera based on compressed sensing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00469350" target="_blank" >RIV/61389021:_____/16:00469350 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1117/12.2250268" target="_blank" >http://dx.doi.org/10.1117/12.2250268</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2250268" target="_blank" >10.1117/12.2250268</a>

Result language

angličtina

Original language name

Compact and robust hyperspectral camera based on compressed sensing

Original language description

Spectrum of light which is emitted or reflected by an object carries immense amount of information about the object. A simple piece of evidence is the importance of color sensing for human vision. Combining an image acquisition with efficient measurement of light spectra for each detected pixel is therefore one of the important issues in imaging, referred as hyperspectral imaging. We demonstrate a construction of a compact and robust hyperspectral camera for the visible and near-IR spectral region. The camera was designed vastly based on off-shelf optics, yet an extensive optimization and addition of three customized parts enabled construction of the camera featuring a low f-number (F/3.9) and fully concentric optics. We employ a novel approach of compressed sensing (namely coded aperture snapshot spectral imaging, abbrev. CASSI). The compressed sensing enables to computationally extract an encoded hyperspectral information from a single camera exposition. Owing to the technique the camera lacks any moving or scanning part, while it can record the full image and spectral information in a single snapshot. Moreover, unlike the commonly used compressed sensing table-top apparatuses, the camera represents a portable device able to work outside a lab. We demonstrate the spectro-temporal reconstruction of recorded scenes based on 9090 random matrix encoding. Finally, we discuss potential of the compressed sensing in hyperspectral camera.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

—

Project

<a href="/en/project/LO1206" target="_blank" >LO1206: Modern optical systems and technologies</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of SPIE 10151, Optics and Measurement International Conference 2016

ISBN

978-1-5106-0753-8

ISSN

0277-786X

e-ISSN

—

Number of pages

7

Pages from-to

—

Publisher name

SPIE, Society of Photo-Optical Instrumentation Engineers

Place of publication

Bellingham

Event location

Liberec

Event date

Oct 11, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000393154700023