Abstract
This article is a companion paper of a previous work where we have developed the numerical analysis of a variational model first introduced by Rudin et al. and revisited by Meyer for removing the noise and capturing textures in an image. The basic idea in this model is to decompose an image f into two components (u + v) and then to search for (u,v) as a minimizer of an energy functional. The first component u belongs to BV and contains geometrical information, while the second one v is sought in a space G which contains signals with large oscillations, i.e. noise and textures. In Meyer carried out his study in the whole ℝ2 and his approach is rather built on harmonic analysis tools. We place ourselves in the case of a bounded set Ω of ℝ2 which is the proper setting for image processing and our approach is based upon functional analysis arguments. We define in this context the space G, give some of its properties, and then study in this continuous setting the energy functional which allows us to recover the components u and v. We present some numerical experiments to show the relevance of the model for image decomposition and for image denoising.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Author information
Authors and Affiliations
Corresponding authors
Rights and permissions
About this article
Cite this article
Aubert, G., Aujol, JF. Modeling Very Oscillating Signals. Application to Image Processing. Appl Math Optim 51, 163–182 (2005). https://doi.org/10.1007/s00245-004-0812-z
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00245-004-0812-z