87 citations · 197 across the 13 of their papers we have counts for
3 papers · 1 filter
Bilevel parameter learning for higher-order total variation regularisation models
J. C. De los Reyes, C. -B. Schönlieb, T. Valkonen
We consider a bilevel optimisation approach for parameter learning in higher-order total variation image reconstruction models. Apart from the least squares cost functional, natura…
Bilevel approaches for learning of variational imaging models
Luca Calatroni, Cao Chung, Juan Carlos De Los Reyes +2
We review some recent learning approaches in variational imaging, based on bilevel optimisation, and emphasize the importance of their treatment in function space. The paper covers…
The structure of optimal parameters for image restoration problems
Juan Carlos De Los Reyes, Carola-Bibiane Schönlieb, Tuomo Valkonen
We study the qualitative properties of optimal regularisation parameters in variational models for image restoration. The parameters are solutions of bilevel optimisation problems…