Optimizing Parametric Total Variation Models
Author
Summary, in English
minimization methods is that they seek to compute global
solutions. Even for non-convex energy functionals, optimization
methods such as graph cuts have proven to produce
high-quality solutions by iterative minimization based on
large neighborhoods, making them less vulnerable to local
minima. Our approach takes this a step further by enlarging
the search neighborhood with one dimension.
In this paper we consider binary total variation problems
that depend on an additional set of parameters. Examples
include:
(i) the Chan-Vese model that we solve globally
(ii) ratio and constrained minimization which can be formulated
as parametric problems, and
(iii) variants of the Mumford-Shah functional.
Our approach is based on a recent theorem of Chambolle
which states that solving a one-parameter family of binary
problems amounts to solving a single convex variational
problem. We prove a generalization of this result and show
how it can be applied to parametric optimization.
Department/s
- Mathematics (Faculty of Engineering)
- Mathematical Imaging Group
Publishing year
2009
Language
English
Pages
2240-2247
Publication/Series
[Host publication title missing]
Full text
Links
Document type
Conference paper
Topic
- Mathematics
- Computer Vision and Robotics (Autonomous Systems)
Keywords
- segmentation
- total variation
- image analysis
- optimization
Conference name
IEEE International Conference on Computer Vision (ICCV), 2009
Conference date
2009-09-27 - 2009-10-04
Conference place
Kyoto, Japan
Status
Published
Research group
- Mathematical Imaging Group