Digital colour restoration: an appearance-based approach

Authors

  • Anna J. Berolo Dipartimento di Informatica Università degli Studi di Milano
  • Alessandro Rizzi Dipartimento di Informatica Università degli Studi di Milano
  • Daniele Marini Dipartimento di Informatica Università degli Studi di Milano
  • Davide Gadia Dipartimento di Informatica Università degli Studi di Milano
  • Cristian Bonanomi Dipartimento di Informatica Università degli Studi di Milano
  • Desirée Sabatini Centro Teatro di Ateneo Sapienza Università di Roma

Keywords:

Color, lighting, visual perception, digital, design

Abstract

In this paper, we present an almost-unsupervised approach to digital colour restoration in films inspired by visual perception mechanisms. The method presented uses a Spatial Colour Algorithm to restore colour appearance rather than physical colour. The paper also presents two examples of restoration based on this approach. It also demonstrates the flexibility and effectiveness of ACEforFilm to perform an almost-unsupervised colour restoration on both live-action and animated films. Thanks to the application of ACEforFilm, it was possible to remove colour dominants, equalise the histogram, control dynamic range and global and local contrast, and increase saturation.

References

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A. Rizzi, C. Gatta, D. Marini, “A New Algorithm for Unsupervised Global and Local Color Correction”, Pattern Recognition Letters, Vol 24 (11), pp. 1663-1677, Luglio 2003.

A. Rizzi, C. Gatta, D. Marini, “From Retinex to Automatic Color Equalization: issues in developing a new algorithm for unsupervised color equalization”, Journal of Electronic Imaging, Vol. 13, No. 1, January 2004, pp. 75-84.

A. Rizzi, M. Chambah, “Perceptual Color Film Restoration” SMPTE Motion Imaging Journal (Society of Mot¬ion Picture and Television Engineers), Vol. 19, No 8, pp. 33-41, Nov-Dec, (2010).

R. Bonisoli and A. Rizzi, “Restauro digitale del colore: il caso de il racconto della Stura,” Atti della II Conferenza nazionale del Gruppo del Colore (SIOF), Milan (Italia), 2006.

A. Berolo, S. Brivio, D. Sabatini, and A. Rizzi, “Il restauro del colore de la lunga calza verde,” Atti della VIII Conferenza nazionale del Gruppo del Colore, Bologna (Italia), 2012.

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Published

2014-06-01

Issue

Vol. 1 (2014)

Section

Papers

License

Copyright (c) 2014 Cultura e Scienza del Colore - Color Culture and Science

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This work is licensed under a Creative Commons Attribution 4.0 International License.

The "Cultura e Scienza del Colore - Color Culture and Science" journal is registered at the Court of Milan at n.233 of 24.06.2014.

The journal is an open access journal, free for readers and authors and has joined ROAD, the Directory of Open Access scholarly Resources, since 2014. Articles published in the “Cultura e Scienza del Colore - Color Culture and Science" journal are open access articles, distributed under the terms and conditions of the Creative Commons Attribution License (CC BY). The copyright is retained by the author(s).

How to Cite

“Digital colour restoration: an appearance-based approach ” (2014) Cultura e Scienza del Colore - Color Culture and Science, 1, pp. 08–12. Available at: https://jcolore.gruppodelcolore.it/ojs/index.php/CCSJ/article/view/14.01.01 (Accessed: 24 April 2024).