T. Poggio and C. Koch, Ill-Posed Problems in Early Vision: From Computational Theory to Analogue Networks, Proceedings of the Royal Society B: Biological Sciences, vol.226, issue.1244, pp.303-323, 1985.
DOI : 10.1098/rspb.1985.0097

S. Geman and D. Geman, Stochastic relaxation, Gibbs distribution , and the Bayesian restoration of images, IEEE Trans. Pattern Anal. Mach. Intell, vol.6, pp.721-741, 1984.

B. Chalmond, Image restoration using an estimated Markov model, Signal Process, pp.115-129, 1988.
DOI : 10.1016/0165-1684(88)90065-5

P. Bouthemy and E. François, Motion segmentation and qualitative dynamic scene analysis from an image sequence, International Journal of Computer Vision, vol.49, issue.5, pp.157-182, 1993.
DOI : 10.1007/BF01420735

S. Kirkpatrick, C. D. Gelatt, and M. P. Vecchi, Optimization by Simulated Annealing, Science, vol.220, issue.4598, pp.671-680, 1983.
DOI : 10.1126/science.220.4598.671

C. Koch, J. Marroquin, and A. Yuille, Analog "neuronal" networks in early vision., Proc. Natl. Acad. Sci. USA, pp.4263-4267, 1986.
DOI : 10.1073/pnas.83.12.4263

D. W. Murray, A. Kashko, and H. Buxton, A parallel approach to the picture restoration algorithm of Geman and Geman on an SIMD machine, Image and Vision Computing, vol.4, issue.3, pp.133-142, 1986.
DOI : 10.1016/0262-8856(86)90056-9

J. G. Harris, C. Koch, E. Staats, and J. Luo, Analog hardware for detecting discontinuities in early vision, International Journal of Computer Vision, vol.2, issue.1, pp.211-222, 1990.
DOI : 10.1007/BF00054996

A. Lumsdaine, J. L. Wyatt, and I. M. , Nonlinear analog networks for image smoothing and segmentation, Journal of VLSI signal processing systems for signal, image and video technology, vol.7, issue.10, pp.53-68, 1991.
DOI : 10.1007/BF00927834

L. Bedini and A. Tonazzini, Image restoration preserving discontinuities: the Bayesian approach and neural networks, Image and Vision Computing, vol.10, issue.2, pp.108-118, 1992.
DOI : 10.1016/0262-8856(92)90005-N

P. C. Yu, S. J. Decker, H. S. Lee, C. G. Sodini, and J. L. Wyatt, CMOS resistive fuses for image smoothing and segmentation, IEEE Journal of Solid-State Circuits, vol.27, issue.4, pp.545-553, 1992.
DOI : 10.1109/4.126542

F. C. Jeng and J. W. Woods, Compound Gauss-Markov random fields for image estimation, IEEE Transactions on Signal Processing, vol.39, issue.3, pp.683-697, 1991.
DOI : 10.1109/78.80887

M. Bertero, T. A. Poggio, and V. Torre, Ill-posed problems in early vision, Proc. IEEE 76, pp.869-889, 1988.
DOI : 10.1109/5.5962

P. Charbonier, L. Blanc-féraud, G. Aubert, and M. Barlaud, Deterministic edge-preserving regularization in computed imaging, IEEE Transactions on Image Processing, vol.6, issue.2, pp.298-311, 1997.
DOI : 10.1109/83.551699

J. Marroquin, Surface reconstruction preserving discontinuities A. I. Memo 792 MIT, 1984.

D. Vanderbelt and S. G. Louie, A Monte carlo simulated annealing approach to optimization over continuous variables, Journal of Computational Physics, vol.56, issue.2, pp.259-271, 1984.
DOI : 10.1016/0021-9991(84)90095-0

M. A. Styblinsky and T. S. Tang, Experiments in nonconvex optimization: Stochastic approximation with function smoothing and simulated annealing, Neural Networks, vol.3, issue.4, pp.467-483, 1990.
DOI : 10.1016/0893-6080(90)90029-K

R. L. Stratonovitch, of Topics in the Theory of Random Noise Gordon & Breach, Markov Processes and Related Processes, 1967.

C. W. Gardiner, The Ito calculus and stochastic differential equations, Handbook of Stochastic Methods Springer- Verlag, pp.106-113, 1990.

D. Geman and C. Yang, Nonlinear image recovery with half-quadratic regularization, IEEE Transactions on Image Processing, vol.4, issue.7, pp.932-945, 1996.
DOI : 10.1109/83.392335

D. Prévost, . Ph, L. Lalanne, P. Garnero, and . Chavel, Quasistatic algorithm for image restoration preserving discontinuities, Neural and Stochastic Methods in Image and Signal Processing Proc. SPIE 2304, pp.156-164, 1994.

E. Aarts and J. Korst, Simulated Annealing and Boltzmann Machines Wiley, pp.33-52, 1989.

J. Marroquin, S. Mitter, and T. Poggio, Probabilistic Solution of Ill-Posed Problems in Computational Vision, Journal of the American Statistical Association, vol.18, issue.397, pp.76-89, 1987.
DOI : 10.1080/01621459.1987.10478393

D. Geman, S. Geman, C. Graffine, and P. Dong, Boundary detection by constrained optimization, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.12, issue.7, pp.609-628, 1990.
DOI : 10.1109/34.56204

J. Alspector, J. W. Gannett, S. Haber, M. B. Parker, and R. Chu, A VLSI-efficient technique for generating multiple uncorrelated noise sources and its application to stochastic neural networks, IEEE Transactions on Circuits and Systems, vol.38, issue.1, pp.109-123, 1991.
DOI : 10.1109/31.101308

A. J. Martino and G. M. Morris, Optical random number generator based on photoevent locations, Applied Optics, vol.30, issue.8, pp.981-989, 1991.
DOI : 10.1364/AO.30.000981

G. M. Morris, Optical Computing By Monte Carlo Methods, Optical Engineering, vol.24, issue.1, pp.86-90, 1985.
DOI : 10.1117/12.7973430

J. Marron, A. J. Martino, and G. M. Morris, Generation of random arrays using clipped laser speckle, Applied Optics, vol.25, issue.1, pp.26-30, 1987.
DOI : 10.1364/AO.25.000026

A. Dupret, E. Belhaire, and P. Garda, Scalable array of Gaussian white noise sources for analogue VLSI implementation, Electronics Letters, vol.31, issue.17, pp.1457-1458, 1996.
DOI : 10.1049/el:19950972

S. Wolfram, Random sequence generation by cellular automata, Advances in Applied Mathematics, vol.7, issue.2, pp.123-169, 1986.
DOI : 10.1016/0196-8858(86)90028-X

. Ph, H. Lalanne, J. C. Richard, P. Rodier, J. Chavel et al., 2D generation of random numbers by multimode fiber speckle for silicon arrays of processing elements, Opt. Commun, vol.76, pp.387-394, 1990.

. Ph, E. Lalanne, J. C. Belhaire, A. Rodier, P. Dupret et al., Gaussian random number generation by differential detection of speckles, Opt. Eng, vol.34, pp.1835-1837, 1995.

G. Prémont, . Ph, P. Lalanne, M. Chavel, P. Kuijk et al., Generation of sigmoid probability functions by clipped differential speckle detection, Optics Communications, vol.129, issue.5-6, pp.347-352, 1996.
DOI : 10.1016/S0030-4018(96)00163-0

A. J. Gray, J. W. Kay, and D. M. Titterington, On the estimation of noisy binary Markov random fields, Pattern Recognition, vol.25, issue.7, pp.749-768, 1992.
DOI : 10.1016/0031-3203(92)90138-9

A. Dupret, E. Belhaire, J. C. Rodier, . Ph, D. Lalanne et al., An optoelectronic CMOS circuit implementing a simulated annealing algorithm, IEEE Journal of Solid-State Circuits, vol.31, issue.7, pp.1046-1050, 1996.
DOI : 10.1109/4.508220

W. Millar, CXVI. Some general theorems for non-linear systems possessing resistance, The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, vol.42, issue.333, pp.1150-1160, 1951.
DOI : 10.1080/14786445108561361

J. Harris, C. Koch, and J. Luo, A two-dimensional analog VLSI circuit for detecting discontinuities in early vision, Science, vol.248, issue.4960, pp.1209-1211, 1990.
DOI : 10.1126/science.2349479

J. Harris, C. Koch, E. Staats, and J. Luo, Analog hardware for detecting discontinuities in early vision, International Journal of Computer Vision, vol.2, issue.1, pp.211-223, 1990.
DOI : 10.1007/BF00054996

H. Nyquist, Thermal Agitation of Electric Charge in Conductors, Physical Review, vol.32, issue.1, pp.110-113, 1928.
DOI : 10.1103/PhysRev.32.110

H. Kobayashi, J. L. White, and A. A. Abidi, An active resistor network for Gaussian filtering of images, IEEE Journal of Solid-State Circuits, vol.26, issue.5, pp.738-747, 1991.
DOI : 10.1109/4.78244

R. A. Nordin, A. F. Levi, R. N. Nottenburg, J. O-'gorman, T. Tanbun-ek et al., A systems perspective on digital interconnection technology, Journal of Lightwave Technology, vol.10, issue.6, pp.811-827, 1992.
DOI : 10.1109/50.143082

J. Besag, Statistical analysis of dirty pictures*, Journal of Applied Statistics, vol.6, issue.5-6, pp.259-302, 1986.
DOI : 10.1016/0031-3203(83)90012-2