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Publications associées (258)
Bi-Exponential Edge-Preserving Smoother
Michaël Unser, Daniel Sage, Philippe Thévenaz
Edge-preserving smoothers need not be taxed by a severe computational cost. We present, in this paper, a lean algorithm that is inspired by the bi-exponential filter and preserves its structure-a pair of one-tap recursions. By a careful but simple local ad ...
Institute of Electrical and Electronics Engineers2012Analytical expression of pulse broadening in an arbitrary linear slow light medium
We derive an analytical expression for the broadening of a Gaussian input pulse in an arbitrary linear slow light medium. The expression consists of two terms, one corresponding to amplitude broadening (low-pass filtering of the pulse bandwidth) and anothe ...
2012Simulation of flows of viscoelastic fluids at high Weissenberg number using a filter-based stabilization of the spectral element method
Michel Deville, Nicolas Fietier, Azadeh Jafari
The challenge for computational rheologists is to develop efficient and stable numerical schemes in order to obtain accurate numerical solutions for the governing equations at values of practical interest of the Weissenberg number. One of the associated pr ...
2012