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Removing Artefact From Color and Contrast Modifications

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Date
2011
Link to item file
http://hal.archives-ouvertes.fr/hal-00505966/fr/
Dewey
Traitement du signal
Sujet
artefact-free; image regularization; optimal transportation; histogram specification; contrast equalization; contrast adjustment; color transfer; contrast modification
Journal issue
IEEE Transactions on Image Processing
Volume
20
Number
11
Publication date
2011
Article pages
3073-3085
Publisher
IEEE
DOI
http://dx.doi.org/10.1109/TIP.2011.2142318
URI
https://basepub.dauphine.fr/handle/123456789/4698
Collections
  • CEREMADE : Publications
Metadata
Show full item record
Author
Gousseau, Yann
Delon, Julie
Rabin, Julien
Type
Article accepté pour publication ou publié
Abstract (EN)
This work is concerned with the modification of the gray level or color distribution of digital images. A common drawback of classical methods aiming at such modifications is the revealing of artefacts or the attenuation of details and textures. In this work we propose a generic filtering method enabling, given the original image and the radiometrically corrected one, to suppress artefacts while preserving details. The approach relies on the key observation that artefacts correspond to spatial irregularity of the so-called "transportation map", defined as the difference between the original and the corrected image. The proposed method draws on the non-local Yaroslavsky filter to regularize the transportation map. The efficiency of the method is shown on various radiometric modifications: contrast equalization, midway histogram, color enhancement and color transfer. A comparison with related approaches is also provided.

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