Improved color accuracy of the camera using optimized matching illumination method

Long Ma; Jie Chen

doi:10.1117/12.2687940

11 August 2023 Improved color accuracy of the camera using optimized matching illumination method

Long Ma, Jie Chen

Proceedings Volume 12785, Intelligent Photonics (Meta) Technology Symposium (IPTS2023); 1278506 (2023) https://doi.org/10.1117/12.2687940
Event: 2023 Intelligent Photonics (Meta) Technology Symposium (IPTS2023), 2023, Wuhan, China

Abstract

To improve the color reproduction and realism of digital cameras and to promote the development of computer vision. Camera colorimetry is conditioned on the spectral sensitivity response of the camera being a linear transformation of the color matching function of the human visual system. Previous methods have proposed placing well-designed filters in front of the camera to produce a sensitivity that well matches the Luther condition. In this paper, we optimize the latest matching illumination method (by using a spectral-tunable illumination system to modulate the spectrum of certain light sources), improve the method of designing filters and add new constraints. Experiments demonstrate that the matching illumination method using new objective functions give a 5% improvement over the original method, and the optimization of the filter using a gradient ascent algorithm and a genetic algorithm gives a 10% improvement in chromaticity over the original method. The method of limiting the average transmittance also has a 10% improvement over the previous one. As a result, these methods can make the imaging of digital cameras more accurate and realistic.

Citation Download Citation

Long Ma and Jie Chen "Improved color accuracy of the camera using optimized matching illumination method", Proc. SPIE 12785, Intelligent Photonics (Meta) Technology Symposium (IPTS2023), 1278506 (11 August 2023); https://doi.org/10.1117/12.2687940

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KEYWORDS

Cameras

Optical filters

Tunable filters

Light sources and illumination

Light sources

Transmittance

Digital cameras

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