In this example, the focus is set to the face by drawing the lines of the face more thick than other lines. In this Paper, we have presented the design and implementation of a system for modeling and visualizing sign language generation using line drawings. Our system is able to vary the visualization in order to emphasize different parts of individual signs by varying the line style. In particular, the possibility to vary the visualization in order to emphasize important parts was considered to be a key element which is necessary for teaching systems. The fact that line drawings were used was well received, as this presentation style lends itself naturally to such emphasis, and corresponds to the presentation style in most printed materials.
Future work leads in two directions.
First, the system itself and the interaction with the user defining the signs and their emphasizing must be improved. For example, casual dependencies in line movements between keyframes should be considered. This would enable e.g. automatic setting of wrinkles. Second, methods for integrating our modeling and visualization system into other environments must be investigated. Furthermore, the use of the line drawing tool developed under the leadership of Stefan Schlechtweg is gratefully acknowledged.