Summary
Presented in this paper is a sketch recognition system for diagramming constraint networks. The system uses the LADDER sketch language along with GUILD to generate a user interface from LADDER descriptions. The geometric constraints used in LADDER to define the recognized shapes in the system are described. As well as geometric constraints, contextual rules are used to help disambiguate similar shapes. An informal evaluation was done using graduate students familiar with sketch recognition to show that the system is able to recognize the desired shapes.Discussion
This work introduces sketch recognition to a new domain, constraint networks. Future work for this research includes a formal evaluation not only of the effectiveness of the system, but also, an analysis of how sketching constraint networks on computer is improvement over existing methods for creating constraint networks.Constraint networks contain both shapes and variable letters. The authors make an interesting point of using a handwritting recognizer for the letters. Finding a method to integrate a handwritting recognizer with the geometric recognizer seems a plausible and worthwhile approach to addressing recognition issues that arise when dealing with shape versus text.
1 comment:
Well, though they are recognizing a few letters, it's the same as if they were shapes. The system isn't distinguishing between text and shape as everything is just a geometric shape to it.
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