Geodesic
Stable evaluation of differential operators and linear and nonlinear multi-scale filtering
Electronic Journal of Differential Equations, Tome 1997 (1997).

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: Diffusion processes create multi--scale analyses, which enable the generation of simplified pictures, where for increasing scale the image gets sketchier. In many practical applications the "scaled image" can be characterized via a variational formulation as the solution of a minimization problem involving unbounded operators. These unbounded operators can be evaluated by regularization techniques. We show that the theory of stable evaluation of unbounded operators can be applied to efficiently solve these minimization problems.
Classification : 65J10, 65J15, 65K10, 35J60, 26A45
Keywords: nondifferntiable optimization problems, regularization, inverse problems, image reconstruction, bounded variation norm 
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     author = {Scherzer, Otmar},
     title = {Stable evaluation of differential operators and linear and nonlinear multi-scale filtering},
     journal = {Electronic Journal of Differential Equations},
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     volume = {1997},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_1997__1997__a43/}
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Scherzer, Otmar. Stable evaluation of differential operators and linear and nonlinear multi-scale filtering. Electronic Journal of Differential Equations, Tome 1997 (1997). http://geodesic.mathdoc.fr/item/EJDE_1997__1997__a43/