A generic variational approach for demosaicking from an arbitrary color filter array

Laurent Condat (1)

1 Equipe Image - Laboratoire GREYC - UMR6072

We propose a method to demosaick images acquired with a completely arbitrary color filter array (CFA).We adopt a variational approach where the reconstructed image has maximal smoothness under the constraint of consistency with the measurements. This optimization problem boils down to a large, sparse system of linear equations to solve, for which we propose an iterative algorithm. Although the approach is linear, it yields visually pleasing demosaicked images and provides a robust framework for comparing the performances of CFAs.

Mots clés: Demosaicking; color filter array; variational reconstruction

Domaines: Traitement des images [eess.IV]

Laurent Condat. A generic variational approach for demosaicking from an arbitrary color filter array. Actes de IEEE ICIP, Nov 2009, Le Caire, Egypt. pp.1625 - 1628, ⟨10.1109/ICIP.2009.5413388⟩. ⟨hal-00814067⟩