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Mathematical Problems in Engineering
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2012
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Article
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Fig 6
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Review Article
Markov Models for Image Labeling
Figure 6
Two examples of hierarchical MRFs. (a) is the most common quadtree where four-grid nodes on the low level are decomposed into one node on the high level. (b) is an irregular pyramid with a large-scale MRF and a corresponding small-scale MRF.
(a)
(b)