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A global shutter CMOS image sensor for hyperspectral imaging

Stefanov, Konstantin D.; Dryer, Ben. J.; Hall, David J.; Holland, Andrew D.; Pratlong, Jérôme; Fryer, Martin and Pike, Andrew (2015). A global shutter CMOS image sensor for hyperspectral imaging. In: Proceedings of SPIE, Society of Photo-Optical Instrumentation Engineers (SPIE), 9602, article no. 96020K.

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DOI (Digital Object Identifier) Link: https://doi.org/10.1117/12.2187856
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Abstract

Hyperspectral imaging has been providing vital information on the Earth landscape in response to the changing environment, land use and natural phenomena. While conventional hyperspectral imaging instruments have typically used rows of linescan CCDs, CMOS image sensors (CIS) have been slowly penetrating space instrumentation for the past decade, and Earth observation (EO) is no exception. CIS provide distinct advantages over CCDs that are relevant to EO hyperspectral imaging. The lack of charge transfer through the array allows the reduction of cross talk usually present in CCDs due to imperfect charge transfer efficiency, and random pixel addressing makes variable integration time possible, and thus improves the camera sensitivity and dynamic range. We have developed a 10T pixel design that integrates a pinned photodiode with global shutter and in-pixel correlated double sampling (CDS) to increase the signal to noise ratio in less intense spectral regimes, allowing for both high resolution and low noise hyperspectral imaging for EO. This paper details the characterization of a test device, providing baseline performance measurements of the array such as noise, responsivity, dark current and global shutter efficiency, and also discussing benchmark hyperspectral imaging requirements such as dynamic range, pixel crosstalk, and image lag.

Item Type: Conference or Workshop Item
Copyright Holders: 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
ISSN: 1996-756X
Project Funding Details:
Funded Project NameProject IDFunding Body
New detectors for hyperspectral imaging in Earth observationNE/L012553/1NERC (Natural Environment Research Council)
Keywords: CMOS sensors; hyperspectral imaging; charge-coupled devices; equipment and services; cameras; inspection equipment; interference (communication); line scan sensors; photodiodes; signal to noise ratio
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Centre for Electronic Imaging (CEI)
Space
Related URLs:
Item ID: 44417
Depositing User: Konstantin Stefanov
Date Deposited: 24 Sep 2015 08:07
Last Modified: 08 Dec 2018 14:00
URI: http://oro.open.ac.uk/id/eprint/44417
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