The convergence of mean field procedures for MRFs [image processing]

摘要

Convergence of the mean field equations is analyzed for the Ising model with a nonhomogeneous external field. When /spl beta/ is small, the equations are a contraction mapping and thereby convergent. When /spl beta/ is large, however, they can be noncontracting and in this case, contraction is restored by a slight modification of the equations.