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Proceedings Paper

Electronic imaging: a tool for the reconstruction of faded color photographs and color movies
Author(s): Rudolf Gschwind; Franziska S. Frey; Lukas Rosenthaler
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Paper 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.

Paper Details

Date Published: 23 March 1995
PDF: 7 pages
Proc. SPIE 2421, Image and Video Processing III, (23 March 1995); doi: 10.1117/12.205493
Show Author Affiliations
Rudolf Gschwind, Univ. of Basel (Switzerland)
Franziska S. Frey, Rochester Institute of Technology (United States)
Lukas Rosenthaler, Univ. of Basel (Switzerland)

Published in SPIE Proceedings Vol. 2421:
Image and Video Processing III
Robert L. Stevenson; Sarah A. Rajala, Editor(s)

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