Enrichment and Reuse of Geometric Models

The information encoded in a geometric model is the basis for a “classical” rendering process. The mere geometry, however, is insufficient when the rendered images are not the final product. Non-geometric information associated with the objects in the model may be necessary for further operations on the image. Especially structure information is helpful during the modeling process as well as for a flexible reuse of the model. Furthermore, an appropriate structure of the model is indispensable for the interactive handling of models, simply because interaction is only possible at the level of the model’s structure.