Characterization and modeling of point spread function in push-broom hyperspectral imaging systems for spectral and
spatial resolution enhancement

Jurij Jemec; Miran Bürmen; Matjaž Kosec; Franjo Pernuš; Boštjan Likar

doi:10.1117/12.2040134

4 March 2014 Characterization and modeling of point spread function in push-broom hyperspectral imaging systems for spectral and spatial resolution enhancement

Jurij Jemec, Miran Bürmen, Matjaž Kosec, Franjo Pernuš, Boštjan Likar

Author Affiliations +

Proceedings Volume 8936, Design and Quality for Biomedical Technologies VII; 893616 (2014) https://doi.org/10.1117/12.2040134
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

Push-broom hyperspectral imaging system ideally disperses the spectral and spatial information in two orthogonal directions preferably aligned with the columns and rows of the imaging sensor. Due to the imperfections in the camera lens and in particular the optical components of spectrograph, wavelength dependent spectral and spatial distortions along with spatial and spectral blur are introduced in the recorded image. In this study, we propose and evaluate a novel method for characterization and resolution enhancement of push-broom hyperspectral imaging systems. First, the spatially and spectrally dependent response function is characterized by measuring the response of the system to spectral and spatial reference objects. The relevant variability of the response function in the imaging plane is captured by a global parametric model. Finally, the response function estimate is used to remove distortions and enhance the spectral and spatial resolution of the system. The resolution enhancements were assessed by observing the change in full width at half-maximum of spectral response function and rise width of the spatial response function. The results of validation show that the proposed method affectively removes geometric distortions and significantly enhances the spectral and spatial resolution of the recorded images.

Citation Download Citation

Jurij Jemec, Miran Bürmen, Matjaž Kosec, Franjo Pernuš, and Boštjan Likar "Characterization and modeling of point spread function in push-broom hyperspectral imaging systems for spectral and spatial resolution enhancement", Proc. SPIE 8936, Design and Quality for Biomedical Technologies VII, 893616 (4 March 2014); https://doi.org/10.1117/12.2040134

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