Variational method for speckle reduction in coherent imaging systems

Series: 
Applied and Computational Mathematics Seminar
Monday, October 29, 2012 - 14:00
1 hour (actually 50 minutes)
Location: 
Skiles 005
,  
Georiga Tech CSE
,  
Organizer: 
The fully developed speckle(multiplicative noise) naturally appears in coherent imaging systems, such as synthetic aperture radar imaging systems. Since the speckle is multiplicative, it makes difficult to interpret observed data. In this talk, we introduce total variation based variational model and convex optimization algorithm(linearized proximal alternating minimization algorithm) to efficiently remove speckle in synthetic aperture radar imaging systems. Numerical results show that our proposed methods outperform the augmented Lagrangian based state-of-the-art algorithms.