Fast cartoon + texture image filters

Antoni Buades (1) , Triet Le (2) , Jean-Michel Morel (3) , Luminita Vese (4)

1 MAP5 - UMR 8145 - Mathématiques Appliquées Paris 5
2 Mathematics department
3 CMLA - Centre de Mathématiques et de Leurs Applications
4 UCLA - UCLA

Can images be decomposed into the sum of a geometric part and a textural part? In a theoretical breakthrough, Yves Meyer proposed variational models that force the geometric part into the space of functions with bounded variation, and the textural part into a space of oscillatory distributions. Meyer's models are simple minimization problems extending the famous total variation model. However, their numerical solution has proved challenging. It is the object of a literature rich in variants and numerical attempts. This paper starts with the linear model, which reduces to a low-pass/high-pass filter pair. A simple conversion of the linear filter pair into a non-linear filter pair involving the total variation is introduced. This new-proposed nonlinear filter pair retains both the essential features of Meyer's models and the simplicity and rapidity of the linear model. It depends on only one transparent parameter: the texture scale, measured in pixel mesh. Comparative experiments show a better and faster separation of cartoon from texture. One application is illustrated: edge detection.

Domaines: Traitement des images [eess.IV]

Antoni Buades, Triet Le, Jean-Michel Morel, Luminita Vese. Fast cartoon + texture image filters. 2010. ⟨hal-00453255⟩