Extraction of non-binary blotch mattes

Authors:
Mohamed A. Ahmed;François Pitié;Anil C. Kokaram
Affiliations:
Sigmedia, Electronic and Electrical Engineering Department, Trinity College Dublin;Sigmedia, Electronic and Electrical Engineering Department, Trinity College Dublin;Sigmedia, Electronic and Electrical Engineering Department, Trinity College Dublin
Venue:
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Year:
2009

Citing 3
Cited 0

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Abstract

Automated blotch removal is important in film restoration and typically involves a detection/interpolation step. Current algorithms model the corruption as a binary mixture between the original, clean images and an opaque (dirt) field. This typically causes incomplete blotch removal that manifests as blotch haloes in reconstruction. This paper proposes a new approach by modeling the corruption as a continuous mixture between the two components and generating a solution using a Bayesian framework. We use novel priors, propose a computationally efficient scheme for implementation and our results show more complete blotch reconstruction.