Building visual language parsers
CHI '91 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Managing a trois: a study of a multi-user drawing tool in distributed design work
CHI '91 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Specifying gestures by example
Proceedings of the 18th annual conference on Computer graphics and interactive techniques
ClearBoard: a seamless medium for shared drawing and conversation with eye contact
CHI '92 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Incremental recognition in gesture-based and syntax-directed diagram editors
INTERCHI '93 Proceedings of the INTERCHI '93 conference on Human factors in computing systems
Interactive sketching for the early stages of user interface design
CHI '95 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Dual device user interface design: PDAs and interactive television
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Strategic directions in visual languages research
ACM Computing Surveys (CSUR) - Special issue: position statements on strategic directions in computing research
A visual tool for querying geographic databases
AVI '00 Proceedings of the working conference on Advanced visual interfaces
A study of people's sketching habits in GIS
Spatial Cognition and Computation
An interactive system for recognizing hand drawn UML diagrams
CASCON '00 Proceedings of the 2000 conference of the Centre for Advanced Studies on Collaborative research
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We present a system supporting pen-based input and diagram recognition that employs a personal digital assistant (PDA) as an intelligent input device for the system. Functionality is distributed between the PDA and the main computer, with the PDA performing low-level shape recognition and editing functions, and the back-end computer performing high-level recognition functions, including recognition of spatial relations between picture elements. This organization provides a number of advantages over conventional pen-based systems employing simple digitizing tablets. It provides the opportunity to use hardware specially designed for shape recognition and editing in a general diagram recognition system, it allows for improved performance through parallel processing, and it allows diagram entry to be performed remotely through use of the PDA front end in the field, with recognized shapes subsequently downloaded to the main diagram recognizer. We discuss the overall organization of the system, as well as the individual pieces and the communication between them, and describe two ongoing projects employing this architecture.