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Proceedings Paper

Radiometric calibration of wide-field camera system with an application in astronomy
Author(s): Stanislav Vítek; Maria Nasyrova; Veronika Stehlíková
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Paper Abstract

Camera response function (CRF) is widely used for the description of the relationship between scene radiance and image brightness. Most common application of CRF is High Dynamic Range (HDR) reconstruction of the radiance maps of imaged scenes from a set of frames with different exposures. The main goal of this work is to provide an overview of CRF estimation algorithms and compare their outputs with results obtained under laboratory conditions. These algorithms, typically designed for multimedia content, are unfortunately quite useless with astronomical image data, mostly due to their nature (blur, noise, and long exposures). Therefore, we propose an optimization of selected methods to use in an astronomical imaging application. Results are experimentally verified on the wide-field camera system using Digital Single Lens Reflex (DSLR) camera.

Paper Details

Date Published: 19 September 2017
PDF: 7 pages
Proc. SPIE 10396, Applications of Digital Image Processing XL, 1039634 (19 September 2017); doi: 10.1117/12.2274719
Show Author Affiliations
Stanislav Vítek, Czech Technical Univ. in Prague (Czech Republic)
Maria Nasyrova, Czech Technical Univ. in Prague (Czech Republic)
Veronika Stehlíková, Czech Technical Univ. in Prague (Czech Republic)
Max Planck Institute for Extaterrestrial Physics (Germany)

Published in SPIE Proceedings Vol. 10396:
Applications of Digital Image Processing XL
Andrew G. Tescher, Editor(s)

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