A new agent-based paradigm for recognition of free-hand sketches

Currently, important advances are carried out in CAD (Computer Aided Design) applications; however these advances have not taken place for CAS (Computer Aided Sketching) applications. Although natural interfaces for CAD applications are not solved yet, works based on sketching devices have been explored to some extent. The recognition paradigm we propose using an agent-based architecture does not depend on the drawing sequence and takes context information into account to help decisions. An improvement provided is the absence of operation modes, that is, no button is needed to distinguish geometry from symbols or gestures, and also "interpersing" and "overtracing" is accomplished.