Share Email Print
cover

Proceedings Paper • new

Evaluation of color grading impact in restoration process of archive films
Author(s): Karel Fliegel; Stanislav Vítek; Petr Páta; Petr Janout; Jiří Myslík; Josef Pecák; Marek Jícha
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Color grading of archive films is a very particular task in the process of their restoration. The ultimate goal of color grading here is to achieve the same look of the movie as intended at the time of its first presentation. The role of the expert restorer, expert group and a digital colorist in this complicated process is to find the optimal settings of the digital color grading system so that the resulting image look is as close as possible to the estimate of the original reference release print adjusted by the expert group of cinematographers. A methodology for subjective assessment of perceived differences between the outcomes of color grading is introduced, and results of a subjective study are presented. Techniques for objective assessment of perceived differences are discussed, and their performance is evaluated using ground truth obtained from the subjective experiment. In particular, a solution based on calibrated digital single-lens reflex camera and subsequent analysis of image features captured from the projection screen is described. The system based on our previous work is further developed so that it can be used for the analysis of projected images. It allows assessing color differences in these images and predict their impact on the perceived difference in image look.

Paper Details

Date Published: 27 September 2016
PDF: 18 pages
Proc. SPIE 9971, Applications of Digital Image Processing XXXIX, 997121 (27 September 2016); doi: 10.1117/12.2237558
Show Author Affiliations
Karel Fliegel, Czech Technical Univ. in Prague (Czech Republic)
Stanislav Vítek, Czech Technical Univ. in Prague (Czech Republic)
Petr Páta, Czech Technical Univ. in Prague (Czech Republic)
Petr Janout, Czech Technical Univ. in Prague (Czech Republic)
Jiří Myslík, Film and TV School of the Academy of Performing Arts in Prague (Czech Republic)
Josef Pecák, Film and TV School of the Academy of Performing Arts in Prague (Czech Republic)
Marek Jícha, Film and TV School of the Academy of Performing Arts in Prague (Czech Republic)


Published in SPIE Proceedings Vol. 9971:
Applications of Digital Image Processing XXXIX
Andrew G. Tescher, Editor(s)

© SPIE. Terms of Use
Back to Top