Evaluation of super-resolution algorithms for mosaic hyperspectral imagery

Robert Nieuwenhuizen; Michael Schottner; Raimon Pruim; Roelof van Dijk; Nanda van der Stap; Klamer Schutte

doi:10.1117/12.2532606

16 October 2019 Evaluation of super-resolution algorithms for mosaic hyperspectral imagery

Robert Nieuwenhuizen, Michael Schottner, Raimon Pruim, Roelof van Dijk, Nanda van der Stap, Klamer Schutte

Proceedings Volume 11163, Emerging Imaging and Sensing Technologies for Security and Defence IV; 1116305 (2019) https://doi.org/10.1117/12.2532606
Event: SPIE Security + Defence, 2019, Strasbourg, France

Abstract

Hyperspectral imaging sensors acquire images in a large number of spectral bands, unlike traditional electro-optical and infrared sensors which sample only one or few bands. Hyperspectral mosaic sensors acquire an image of all spectral bands in one shot. Using a patterned array of spectral filters they measure different wavelength bands at different pixel locations, but this comes at the cost of a lower spatial resolution, as the sampling per spectral band is lower. Software algorithms can compensate for this loss in spatial sampling in each spectral channel. Here we compare the image quality obtained with spatial bicubic interpolation and two categories of super resolution algorithms: two single frame super resolution algorithms which exploit spectral redundancies in the data and two multiframe super resolution algorithms which exploit spatio-temporal structure. We make a quantitative assessment of the spatial and spectral image reconstruction quality on synthetic data as well as on semi-synthetic mosaic sensor data for applications in security and medical domains. Our results show that multi frame super resolution provides the best spatial and signal-to-noise quality. The single frame super resolution approaches score lower on spatial sharpness but do provide a substantial improvement compared to mere spatial interpolation, while providing in some cases the best spectral quality.

Citation Download Citation

Robert Nieuwenhuizen, Michael Schottner, Raimon Pruim, Roelof van Dijk, Nanda van der Stap, and Klamer Schutte "Evaluation of super-resolution algorithms for mosaic hyperspectral imagery", Proc. SPIE 11163, Emerging Imaging and Sensing Technologies for Security and Defence IV, 1116305 (16 October 2019); https://doi.org/10.1117/12.2532606

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available