I am originally from Munich, Germany, came to complete my graduate studies at the School of Mathematical sciences at Arizona State University.  My advisor is Dr. Rosemary Renaut.

I am currently a postdoctoral fellow at Rice University in the department of Computational and Applied Mathematics.  I am working under the supervision of Dr. Wotao Yin since September 2009.

Prior to joining the research group at Rice, I was a postdoctoral fellow and visiting assistant professor at the University at Buffalo. I worked with my supervisor Dr. Jae-Hun Jung from January 2009 to September 2009.

Research Interests:

• Ill-posed inverse problems, in particular de-blurring and de-noising, Regularization, Total Variation and sparse sensing

1. •Signal processing of seismic signals, medical imaging
   

2. •Polynomial approximation theory, radial basis functions, spectral methods
   

3. •Numerical optimization algorithms for non-differentiable objective functions
   

4. •Wavelet decomposition based image restoration
   

5. •Machine learning
   

Education:

Ph.D., Mathematics, December 2008

Arizona State University

Thesis: Total Variation Regularization for Linear Ill-Posed Inverse Problems: Extensions and Applications (pdf)

Advisor: Prof. Rosemary Renaut

M.S., Mathematics, July 2003

Technische Universitat München

Thesis: Image Restoration by blind deconvolution (pdf)

Advisors: Prof. Rosemary Renaut and Prof. Rupert Lasser

Click here for my resume: Resume_Wolfgang_Stefan.pdf

Click here for my full vitae_en.pdf