Methods using specific attributes and graph grammars in...

Details Methods using specific attributes and graph grammars in... Methods using specific attributes and graph grammars in...

2006-05-09

2006-05-09

Jankus, Almis R. (Department: 2672)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

Reexamination Certificate

active

07042451

ABSTRACT:
A computer-based feature recognition method is used to recognize features in a part of which are of a similar shape. A predetermined set of attributes are generated to represent a user-defined feature. This set is then used to produce an attributed graph which captures the feature shape. The graph is used in recognizing features of a shape similar to the feature shape in a solid model. To recognize a family of a shape feature with a variable number of faces, the shape feature is represented using a grammar employing symbols, rules and a terminating condition. Each symbol denotes an attributed face-adjacency graph and the rules denote permissible topological variations.

REFERENCES:
Sakurai et al., “Recognizing Shape Features in Solid Models”, 1990, IEEE Computer Graphics and Applications, pp. 22-32.

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