Geodesic
Time-delayed Perona-Malik type problems
Acta mathematica Universitatis Comenianae, Tome 76 (2007) no. 1 
H. Amann. Time-delayed Perona-Malik type problems. Acta mathematica Universitatis Comenianae, Tome 76 (2007) no. 1. http://geodesic.mathdoc.fr/item/AMUC_2007_76_1_a2/
@article{AMUC_2007_76_1_a2,
     author = {H. Amann},
     title = {Time-delayed {Perona-Malik} type problems},
     journal = {Acta mathematica Universitatis Comenianae},
     year = {2007},
     volume = {76},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/AMUC_2007_76_1_a2/}
}
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Voir la notice de l'article provenant de la source Comenius University

We propose time regularizations for ill posed evolution equations of the type of the Perona-Malik equation of image processing, prove that they are well posed, and give numerical evidence for their superiority to the widely used space regularizations.