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Designing a physically-feasible colour filter to make a camera more colorimetric
  DOI :  10.2352/issn.2694-118X.2020.LIM-16  Published OnlineSeptember 2020
Abstract

Previously, a method has been developed to find the best colour filter for a given camera which results in the new effective camera sensitivities that best meet the Luther condition. That is, the new sensitivities are approximately linearly related to the XYZ colour matching functions. However, with no constraint, the filter derived from this Luther-condition based optimisation can be rather non-smooth and transmit very little light which are impractical for fabrication. In this paper, we extend the Luther-condition filter optimisation method to allow us to incorporate both the smoothness and transmittance bounds of the recovered filter which are key practical concerns. Experiments demonstrate that we can find physically realisable filters which are smooth and reasonably transmissive with which the effective 'camera+filter' becomes significantly more colorimetric.

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Yuteng Zhu, "Designing a physically-feasible colour filter to make a camera more colorimetricin Proc. IS&T London Imaging Meeting 2020: Future Colour Imaging,  2020,  pp 96 - 99,  https://doi.org/10.2352/issn.2694-118X.2020.LIM-16

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Copyright © Society for Imaging Science and Technology 2020
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London Imaging Meeting
2694-118X
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Society for Imaging Science and Technology