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Proceedings Paper

Hyperspectral calibration method For CMOS-based hyperspectral sensors
Author(s): Julien Pichette; Thomas Goossens; Kathleen Vunckx; Andy Lambrechts
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Paper Abstract

Imec has developed a process for the monolithic integration of optical filters on top of CMOS image sensors, leading to compact, cost-efficient and faster hyperspectral cameras that make the technology attractive for industry. To calibrate the sensor, we introduce a full pixel response model that takes into account the inherent properties of the optical filters. This model is then used to derive a calibration method that enables more accurate and robust measurements of the spectral reflectance of a scene. The calibration method is then extended to take into account the normal manufacturing variations between different sensors to perform an inter-sensor calibration. We experimentally validate this method by scanning reference targets with different types of sensors and demonstrate that accurate and reproducible reflectance measurements are obtained.

Paper Details

Date Published: 20 February 2017
PDF: 13 pages
Proc. SPIE 10110, Photonic Instrumentation Engineering IV, 101100H (20 February 2017); doi: 10.1117/12.2253617
Show Author Affiliations
Julien Pichette, IMEC (Belgium)
Thomas Goossens, KU Leuven (Belgium)
Kathleen Vunckx, IMEC (Belgium)
Andy Lambrechts, IMEC (Belgium)

Published in SPIE Proceedings Vol. 10110:
Photonic Instrumentation Engineering IV
Yakov G. Soskind; Craig Olson, Editor(s)

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