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Optical Engineering

Evaluation of a multispectral image acquisition system aimed at reconstruction of spectral reflectances
Author(s): Noriyuki Shimano
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Paper Abstract

The reconstruction of spectral reflectances of objects being imaged is important in reproducing a color under a variety of viewing illuminants. In this work, a simple formula is derived to evaluate the quality of a set of color image sensors aimed at reconstruction of spectral reflectances, and it is applied to multispectral image acquisition systems. Since the quality depends not only on the spectral sensitivities but also on the noise present in the systems, it is impossible to evaluate a set of sensors without prior knowledge of the noise present in it. Therefore, the noise variance of the multispectral cameras is estimated by a new proposal, and it is applied to the evaluation for the first time. It is shown that the experimental results agree well with the predictions by the evaluation model, and that the method to estimate the noise variance is useful for the evaluation.

Paper Details

Date Published: 1 October 2005
PDF: 6 pages
Opt. Eng. 44(10) 107005 doi: 10.1117/1.2087567
Published in: Optical Engineering Volume 44, Issue 10
Show Author Affiliations
Noriyuki Shimano, Kinki Univ. (Japan)

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