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Simon de Beco

dblp:220/1374 · DBLP profile ↗
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1ranked-venue papers
0as first author
0since 2021 · last 2020
0000-0003-1730-3000ORCID · reported

Domains — the database's venue-derived domains; a paper can count in several

Graphics, computer vision, multimedia, augmented reality and games · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer graphics and multimedia
1 paper
Image and video processing · 100%

Topics — the 3 heaviest of 3, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Image and video processing
image restoration
0.412020
Image Restoration by Combined Order Regularization With Optimal Spatial Adaptation · IEEE Trans. Image Process. 2020
Image and video processing
regularization
0.412020
Image Restoration by Combined Order Regularization With Optimal Spatial Adaptation · IEEE Trans. Image Process. 2020
Image and video processing › image restoration › inverse problem › inverse problem regularization › image regularization
total variation
0.112020
Image Restoration by Combined Order Regularization With Optimal Spatial Adaptation · IEEE Trans. Image Process. 2020

Methods — techniques the papers use, named apart from their topics

hessian-schatten norm · 0.4block coordinate descent · 0.4ADMM · 0.4
YearPublicationVenuePosition
2020 Image Restoration by Combined Order Regularization With Optimal Spatial Adaptation
abstract
Total Variation (TV) and related extensions have been popular in image restoration due to their robust performance and wide applicability. While the original formulation is still relevant after two decades of extensive research, its extensions that combine derivatives of first and second orders are now being explored for better performance, with examples being Combined Order TV (COTV) and Total Generalized Variation (TGV). As an improvement over such multi-order convex formulations, we propose a novel non-convex regularization functional which adaptively combines Hessian-Schatten (HS) norm and first order TV (TV1) functionals with spatially varying weight. This adaptive weight itself is controlled by another regularization term; the total cost becomes the sum of this adaptively weighted HS-TV1 term, the regularization term for the adaptive weight, and the data-fitting term. The reconstruction is obtained by jointly minimizing w.r.t. the required image and the adaptive weight. We construct a block coordinate descent method for this minimization with proof of convergence, which alternates between minimization w.r.t. the required image and the adaptive weights. We derive exact computational formula for minimization w.r.t. the adaptive weight, and construct an ADMM algorithm for minimization w.r.t. to the required image. We compare the proposed method with existing regularization methods, and a recently proposed Deep GAN method using image recovery examples including MRI reconstruction and microscopy deconvolution.
Sanjay Viswanath, Manu Ghulyani, Simon de Beco, Maxime Dahan, Muthuvel Arigovindan
IEEE Trans. Image Process.3