pottsgibbs | R Documentation |
This function produces one simulation of a square numb
by numb
grid
from a Potts distribution with four colours and a four neighbour
structure, relying on niter
iterations of a standard Gibbs sampler.
pottsgibbs(niter, numb, beta)
niter |
number of Gibbs iterations |
numb |
size of the square grid |
beta |
parameter of the Potts model |
returns a random realisation from the Potts model
Geman, S. and Geman, D. (1984) Stochastic relaxation, Gibbs distributions and the Bayesian restoration of images. IEEE Trans. Pattern Anal. Mach. Intell., 6, 721–741.
pottshm
ex=pottsgibbs(100,15,.4)
image(ex)
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