Designing color filter arrays for the joint capture of visible and near-infrared images

Authors:
Yue M. Lu;Clément Fredembach;Martin Vetterli;Sabine Süsstrunk
Affiliations:
School of Computer and Communication Sciences, Ecole Polytechnique Fédérale de Lausanne, Switzerland;School of Computer and Communication Sciences, Ecole Polytechnique Fédérale de Lausanne, Switzerland;School of Computer and Communication Sciences, Ecole Polytechnique Fédérale de Lausanne, Switzerland;School of Computer and Communication Sciences, Ecole Polytechnique Fédérale de Lausanne, Switzerland
Venue:
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Year:
2009

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Abstract

Digital camera sensors are inherently sensitive to the near-infrared (NIR) part of the light spectrum. In this paper, we propose a general design for color filter arrays that allow the joint capture of visible/NIR images using a single sensor. We pose the CFA design as a novel spatial domain optimization problem, and provide an efficient iterative procedure that finds (locally) optimal solutions. Numerical experiments confirm the effectiveness of the proposed CFA design, which can simultaneously capture high quality visible and NIR image pairs.