Dr. Ali Mohammad-Djafari
Research Director at CNRS at Lab des Signaux et Systèmes
SPIE Involvement:
Conference Chair | Author
Area of Expertise:
Computational Imaging , Inverse Problems , Computed Tomography
Profile Summary

Ali Mohammad-Djafari received the B.Sc. degree in electrical engineering from Polytechnique of Teheran, in 1975, the diploma degree (M.Sc.) from Ecole Supérieure d'Electricité (SUPELEC), Gif sur Yvette, France, in 1977 and the "Docteur-Ingénieur" (Ph.D.) degree and "Doctorat d'Etat" in Physics, from the University of Paris Sud 11 (UPS), Orsay, France, respectively in 1981 and 1987.
He was Associate Professor at UPS for two years (1981-1983). Since 1984, he has a permanent position at "Centre National de la Recherche Scientifique (CNRS)" and works at "Laboratoire des Signaux et Systèmes (L2S)" at Supélec. He was a visiting Associate Professor at University of Notre Dame, Indiana, USA during 1997-1998. From 1998 to 2002, he has been at the head of Signal and Image Processing division at this laboratory. Presently, he is "Directeur de recherche" and his main scientific interests are in developing new probabilistic methods based on Bayesian inference, Information Theory and Maximum Entropy approaches for Inverse Problems in general, and more specifically in imaging and vision: image reconstruction, signal and image deconvolution, blind source separation, data fusion, multi and hyperspectral image segmentation. The main application domains of his interests are Computed Tomography (X rays, PET, SPECT, MRI, microwave, ultrasound and eddy current imaging) either for medical imaging or for non destructive testing (NDT) in industry.
Publications (15)

PROCEEDINGS ARTICLE | February 8, 2011
Proc. SPIE. 7873, Computational Imaging IX
KEYWORDS: Diffraction, Statistical analysis, Data modeling, Phase modulation, Dielectrics, Tomography, Optical tomography, Algorithm development, Scatter measurement, Inverse scattering problem

PROCEEDINGS ARTICLE | February 8, 2011
Proc. SPIE. 7873, Computational Imaging IX
KEYWORDS: Radar, Data modeling, Imaging systems, Synthetic aperture radar, Fourier transforms, Image resolution, Inverse problems, Antennas, Radar imaging, Data fusion

SPIE Journal Paper | October 1, 2005
JEI Vol. 14 Issue 04
KEYWORDS: Image segmentation, Wavelets, Beam propagation method, Image processing algorithms and systems, Image quality, Image processing, Image classification, Satellite imaging, Satellites, Hyperspectral imaging

SPIE Journal Paper | April 1, 2005
JEI Vol. 14 Issue 02
KEYWORDS: Image fusion, Image segmentation, Data fusion, Data modeling, Medical imaging, Magnetic resonance imaging, Image processing algorithms and systems, Monte Carlo methods, Reconstruction algorithms, Image classification

SPIE Journal Paper | April 1, 2004
JEI Vol. 13 Issue 02
KEYWORDS: Image segmentation, Signal to noise ratio, Matrices, Monte Carlo methods, Sensors, Computer simulations, Data modeling, Image classification, Interference (communication), Expectation maximization algorithms

PROCEEDINGS ARTICLE | November 13, 2003
Proc. SPIE. 5207, Wavelets: Applications in Signal and Image Processing X
KEYWORDS: Wavelet transforms, Independent component analysis, Wavelets, Denoising, Computer programming, Computer simulations, Signal processing, Algorithm development, Statistical modeling, Process modeling

Showing 5 of 15 publications
Conference Committee Involvement (5)
MaxEnt 2006
4 July 2000 |
MaxEnt 2000
4 July 2000 |
Mathematical Modeling, Bayesian Estimation, and Inverse Problems
21 July 1999 | Denver, CO, United States
Bayesian Inference for Inverse Problems
23 July 1998 | San Diego, CA, United States
MaxEnt 1992
7 April 1992 |
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