Dr. Ali Mohammad-Djafari
Research Director at CNRS at Lab des Signaux et Systèmes
SPIE Involvement:
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 (14)

Proceedings Article | 28 May 2019 Paper
Nicolas Georgin, Camille Chapdelaine, Nicolas Gac, Ali Mohammad-Djafari, Estelle Parra
Proceedings Volume 11072, 110722E (2019) https://doi.org/10.1117/12.2534108
KEYWORDS: Projection systems, Sensors, Reconstruction algorithms, Computed tomography, Alternate lighting of surfaces, Information technology, X-ray computed tomography, 3D modeling, Visualization

Proceedings Article | 8 February 2011 Paper
Proceedings Volume 7873, 78730U (2011) https://doi.org/10.1117/12.872317
KEYWORDS: Diffraction, Optical tomography, Tomography, Data modeling, Scatter measurement, Inverse scattering problem, Statistical analysis, Phase modulation, Algorithm development, Dielectrics

Proceedings Article | 8 February 2011 Paper
Sha Zhu, Ali Mohammad-Djafari, Xiang Li, Junjie Mao
Proceedings Volume 7873, 787306 (2011) https://doi.org/10.1117/12.876541
KEYWORDS: Synthetic aperture radar, Imaging systems, Inverse problems, Radar, Data modeling, Fourier transforms, Image resolution, Radar imaging, Data fusion, Antennas

SPIE Journal Paper | 1 October 2005
JEI, Vol. 14, Issue 04, 043011, (October 2005) https://doi.org/10.1117/12.10.1117/1.2139967
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 | 1 April 2005
Olivier Féron, Ali Mohammad-Djafari
JEI, Vol. 14, Issue 02, 023014, (April 2005) https://doi.org/10.1117/12.10.1117/1.1904066
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

Showing 5 of 14 publications
Proceedings Volume Editor (2)

SPIE Conference Volume | 22 September 1998

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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