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Proceedings Paper

Film grain synthesis and its application to re-graining
Author(s): Peter Schallauer; Roland Mörzinger
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Paper Abstract

Digital film restoration and special effects compositing require more and more automatic procedures for movie regraining. Missing or inhomogeneous grain decreases perceived quality. For the purpose of grain synthesis an existing texture synthesis algorithm has been evaluated and optimized. We show that this algorithm can produce synthetic grain which is perceptually similar to a given grain template, which has high spatial and temporal variation and which can be applied to multi-spectral images. Furthermore a re-grain application framework is proposed, which synthesises based on an input grain template artificial grain and composites this together with the original image content. Due to its modular approach this framework supports manual as well as automatic re-graining applications. Two example applications are presented, one for re-graining an entire movie and one for fully automatic re-graining of image regions produced by restoration algorithms. Low computational cost of the proposed algorithms allows application in industrial grade software.

Paper Details

Date Published: 17 January 2006
PDF: 7 pages
Proc. SPIE 6059, Image Quality and System Performance III, 60590Z (17 January 2006); doi: 10.1117/12.650694
Show Author Affiliations
Peter Schallauer, Joanneum Research (Austria)
Roland Mörzinger, Joanneum Research (Austria)

Published in SPIE Proceedings Vol. 6059:
Image Quality and System Performance III
Luke C. Cui; Yoichi Miyake, Editor(s)

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