Graphical input through machine recognition of sketches
SIGGRAPH '76 Proceedings of the 3rd annual conference on Computer graphics and interactive techniques
User-oriented graphics systems for decision support in unstructured tasks
UODIGS '76 Proceedings of the ACM/SIGGRAPH Workshop on User-oriented Design of Interactive Graphics Systems
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This paper presents an approach to improving the interface between the user and the computer by replacing the typical action-response dialogue with a looser scheme in which inferences are drawn from user actions. The recognition of hand-drawn sketches is offered as a paradigm for use of this technique in the field of computer-aided design. In design problems, the computer offers the capabilities of exteriorization and transformation. Although transformation processes are widely used in design aids, the computer has found little use as a medium of exteriorization because of difficulty of graphical input. The program described here employs a model of the user as a means of inferring user intent as a function of sequence, speed, and pressure. It is proposed that this modeling technique can be applied to interactive graphics systems, leading to a better interface for the solution of design problems.