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Stochastic annealing for nearest-neighbour point processes with application to object recognition

Published online by Cambridge University Press:  01 July 2016

M. N. M. Van Lieshout*
Affiliation:
University of Warwick
*
* Present address: Department of Statistics, University of Warwick, Coventry CV4 7AL, UK.

Abstract

We study convergence in total variation of non-stationary Markov chains in continuous time and apply the results to the image analysis problem of object recognition. The input is a grey-scale or binary image and the desired output is a graphical pattern in continuous space, such as a list of geometric objects or a line drawing. The natural prior models are Markov point processes found in stochastic geometry. We construct well-defined spatial birth-and-death processes that converge weakly to the posterior distribution. A simulated annealing algorithm involving a sequence of spatial birth-and-death processes is developed and shown to converge in total variation to a uniform distribution on the set of posterior mode solutions. The method is demonstrated on a tame example.

Type
Stochastic Geometry and Statistical Applications
Copyright
Copyright © Applied Probability Trust 1994 

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Footnotes

Research carried out at the Free University, Amsterdam, and CWI, Amsterdam.

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