Saving the movies: optical design of a multispectral film scanner

Julius Muschaweck; Kristina Uhlendorf; Barbara Flückiger; Lutz Garmsen; David Pfluger; Giorgio Trumpy; Martin Weiss

doi:10.1117/12.2691618

13 May 2024 Saving the movies: optical design of a multispectral film scanner

Julius Muschaweck, Kristina Uhlendorf, Barbara Flückiger, Lutz Garmsen, David Pfluger, Giorgio Trumpy, Martin Weiss

Proceedings Volume 12798, International Optical Design Conference 2023; 127980E (2024) https://doi.org/10.1117/12.2691618
Event: International Optical Design Conference 2023, 2023, Quebec City, QC, Canada

Abstract

Analog color film scanning must be automated to rescue films from decay in archives, but state-of-the-art RGB scanning requires skilled color grading technicians, who are scarce. Previous work showed how a multi-spectral approach can mostly automate the color grading process, and how incorporating both diffuse and low-NA illumination better reproduces the viewing impression, while enabling standard scratch and dust removal. In this paper, we present the seven LED channel illumination system and the VIS-NIR imaging optical design of this system.

Citation Download Citation

Julius Muschaweck, Kristina Uhlendorf, Barbara Flückiger, Lutz Garmsen, David Pfluger, Giorgio Trumpy, and Martin Weiss "Saving the movies: optical design of a multispectral film scanner", Proc. SPIE 12798, International Optical Design Conference 2023, 127980E (13 May 2024); https://doi.org/10.1117/12.2691618

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