Electronic imaging: a tool for the reconstruction of faded color photographs and color movies

Rudolf Gschwind; Franziska S. Frey; Lukas Rosenthaler

doi:10.1117/12.205493

23 March 1995 Electronic imaging: a tool for the reconstruction of faded color photographs and color movies

Rudolf Gschwind, Franziska S. Frey, Lukas Rosenthaler

Proceedings Volume 2421, Image and Video Processing III; (1995) https://doi.org/10.1117/12.205493
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1995, San Jose, CA, United States

Abstract

A method to restore faded color materials by digital image processing is presented. The algorithms used for the reconstruction are based on photographic experiments, i.e., on accelerated fading tests of various photographic materials. The densities of the original and the faded materials were measured. Based on this data, a mathematical model for fading can be described by a linear equation. The faded image is digitized using a scanner of high spatial and photometric resolution. For good spectral resolution, channel separations are done with narrow- band interference filters. The original colors are reconstructed by applying the inverse of the facing equation. The corrected image is exposed with a high-resolution film recorder on color film. The method shows good results for color slides, prints, and 16 mm movies.

Citation Download Citation

Rudolf Gschwind, Franziska S. Frey, and Lukas Rosenthaler "Electronic imaging: a tool for the reconstruction of faded color photographs and color movies", Proc. SPIE 2421, Image and Video Processing III, (23 March 1995); https://doi.org/10.1117/12.205493

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