𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Finite difference approximation of the Mumford-Shah functional

✍ Scribed by Massimo Gobbino


Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
333 KB
Volume
51
Category
Article
ISSN
0010-3640

No coin nor oath required. For personal study only.

✦ Synopsis


We study the pointwise convergence and the Ξ“-convergence of a family of nonlocal functionals defined in L 1 loc (R n ) to a local functional F (u) that depends on the gradient of u and on the set of discontinuity points of u. We apply this result to approximate a minimum problem introduced by Mumford and Shah to study edge detection in computer vision theory.


πŸ“œ SIMILAR VOLUMES


An approximation of the Mumford–Shah ene
✍ Gilles Aubert; Laure Blanc-FΓ©raud; Riccardo March πŸ“‚ Article πŸ“… 2006 πŸ› Elsevier Science 🌐 English βš– 225 KB

We show the -convergence of a family of discrete functionals to the Mumford and Shah image segmentation functional. The functionals of the family are constructed by modifying the elliptic approximating functionals proposed by Ambrosio and Tortorelli. The quadratic term of the energy related to the e

Local calibrations for minimizers of the
✍ Maria Giovanna Mora; Massimiliano Morini πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 360 KB

Using a calibration method, we prove that, if w is a function which satisfies all Euler conditions for the Mumford-Shah functional on a two-dimensional open set , and the discontinuity set S w of w is a regular curve connecting two boundary points, then there exists a uniform neighbourhood U of S w