Markov Random Fields

As with greyscale images, texture effects may be described as local correlations between pixel values. Various models of this kind of phenomenon have been studied, including the theory of markov Fields. The work of Geman and Geman is notable in this regard: these are two people, not clones. See the bibliography for more details; I shall have a little more to say on this topic

later but it represents a degree of technicality inappropriate for the present book.