SBM06: Sketch Based Interfaces and Modeling 2006
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Browsing SBM06: Sketch Based Interfaces and Modeling 2006 by Subject "Categories and Subject Descriptors (according to ACM CCS): I.5.1 [Computer Graphics]: Structural Model Generation based on sample users I.5.5 [Interactive systems]: Pen-Based Interfaces."
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Item Automatic Learning of Symbol Descriptions Avoiding Topological Ambiguities(The Eurographics Association, 2006) Mas, Juan; Lamiroy, Bart; Sanchez, Gemma; Llados, Josep; Thomas Stahovich and Mario Costa SousaIn this paper we address both automatic recognition of sketched symbols and the construction of the corresponding models from user drawn examples. Our approach is based on a two stage process. In a first phase we use an Adjacency Grammar to express topological properties of the symbol. In order to be able to further disambiguate topologically similar configurations on the rules of the grammar that are triggered by the recognition process produce a set of local geometric invariants is defined. The combination of both steps results in an efficient recognition method for user drawn sketches. Furthermore, we show that the same approach can easily be adapted for the generation of Adjacency Grammars from user provided and hand drawn examples.