BUGEAU, Aurélie; TA, Vinh-Thong; PAPADAKIS, Nicolas

doi:10.1109/TIP.2013.2288929

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

BUGEAU, Aurélie
Laboratoire Bordelais de Recherche en Informatique [LaBRI]

TA, Vinh-Thong
Laboratoire Bordelais de Recherche en Informatique [LaBRI]

PAPADAKIS, Nicolas
Institut de Mathématiques de Bordeaux [IMB]

Langue

Article de revue

Ce document a été publié dans

IEEE Transactions on Image Processing. 2014, vol. 23, n° 1

Institute of Electrical and Electronics Engineers

Résumé en anglais

In this paper, we address the problem of recovering a color image from a grayscale one. The input color data comes from a source image considered as a reference image. Reconstructing the missing color of a grayscale pixel is here viewed as the problem of automatically selecting the best color among a set of colors candidates while simultaneously ensuring the local spatial coherency of the reconstructed color information. To solve this problem, we propose a variational approach where a specific energy is designed to model the color selection and the spatial constraint problems simultaneously. The contributions of this paper are twofold: first, we introduce a variational formulation modeling the color selection problem under spatial constraints and propose a minimization scheme which allows computing a local minima of the defined non-convex energy. Second, we combine different patch-based features and distances in order to construct a consistent set of possible color candidates. This set is used as input data and our energy minimization allows to automatically select the best color to transfer for each pixel of the grayscale image. Finally, experiments illustrate the potentiality of our simple methodology and show that our results are very competitive with respect to the state-of-the-art methods.< Réduire

Mots clés en anglais

Image colorization

Variational methods

Patch-Based features and distances

URI

https://oskar-bordeaux.fr/handle/20.500.12278/189650

DOI

http://dx.doi.org/10.1109/TIP.2013.2288929

Project ANR

Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

Origine

Importé de hal

Unités de recherche

Institut de Mathématiques de Bordeaux (IMB) - UMR 5251