2024-03-29T09:29:25Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/245222020-02-14T08:59:39Zcom_10261_113com_10261_4col_10261_366
López-Álvarez, Miguel A.
Hernández-Andrés, Javier
Romero, Javier
Campos Acosta, Joaquín
Pons Aglio, Alicia
2010-05-20T09:23:08Z
2010-05-20T09:23:08Z
2009-05
Journal of Imaging Science and Technology (JIST)
http://hdl.handle.net/10261/24522
10.2352/J.ImagingSci.Technol.2009.53.3.031102
We describe a method to calibrate the elements of a multispectral system aimed at skylight imaging, which consists of a monochrome charge-coupled device (CCD) camera and a liquid-crystal tunable filter (LCTF). We demonstrate how to calibrate these two devices in order to build a multispectral camera that can obtain spectroradiometric measurements of skylight. Spectral characterizations of the tunable filter and the camera are presented together with a complete study into correcting temporal and spatial noise, which is of key importance in CCDs. We describe all the necessary steps to undertake this work and all the additional instrumentation that must be used to calibrate the radiometric devices correctly. We show how this complete study of our multispectral system allows us to use it as an accurate, high resolution spectroradiometer.
eng
openAccess
multispectral system
Calibration
noise
CCD
LCTF
skylight
imaging
Calibrating the elements of a multispectral imaging system
artículo