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Summary: EUROGRAPHICS Workshop on Sketch-Based Interfaces and Modeling (2007)
M. van de Panne, E. Saund (Editors)
Designing a Sketch Recognition Front-End: User Perception
of Interface Elements
Paul Wais, Aaron Wolin, and Christine Alvarado
Department of Computer Science, Harvey Mudd College, Claremont, CA
{pwais,awolin,alvarado}@cs.hmc.edu
Abstract
Programs that can recognize students' hand-drawn diagrams have the potential to revolutionize education by
breaking down the barriers between diagram creation and simulation. Much recent work focuses on building
robust recognition engines, but understanding how to support this new interaction paradigm from a user's per-
spective is an equally important and less well understood problem. We present a user study that investigates four
critical sketch recognition user interface issues: how users integrate the process of triggering recognition into
their work, when users prefer to indicate which portions of the diagram should be recognized, how users prefer to
receive recognition feedback, and how users perceive recognition errors. We find that user preferences emphasize
the importance of system reliability, the minimization of distractions, and the maximization of predictability.
Categories and Subject Descriptors (according to ACM CCS): H.5.2 [Information Interfaces and Presentation]: User
Interfaces: Evaluation/methodology, Interaction styles, Prototyping, User-centered design
Categories and Subject Descriptors (according to ACM CCS): I.5.4 [Computing Methodologies]: Pattern Recogni-
tion: Applications
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