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An Object Grammar for Column-Convex Polyominoes

Annals of Combinatorics, 2004
This articles shows an object grammar decomposition for the classes of column convex and directed column-convex polyominoes. The authors obtain the enumeration of these classes according to the semi-perimeter. In addition to that, they give an explanation of the algebraicity of the generating function for both classes.
Duchi E., RINALDI, SIMONE
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A stochastic graph grammar for compositional object representation and recognition

Pattern Recognition, 2009
This paper illustrates a hierarchical generative model for representing and recognizing compositional object categories with large intra-category variance. In this model, objects are broken into their constituent parts and the variability of configurations and relationships between these parts are modeled by stochastic attribute graph grammars, which ...
Zijian Xu   +3 more
openaire   +3 more sources

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