Flattening 3D objects using silhouettes

International audienceOne important research area in Non-Photorealistic Rendering is to obtain silhouettes. There are many methods to obtain silhouettes from 3d models and raster structures, but they are limited in their ability to draw stylized silhouettes with complete flexibility. These limitations do not exist in illustration, as each element is plane and the interaction between them can be eliminated locating each one in a different layer. This is the approach that we present in this paper: a 3D model is flatted in plane elements ordered in space, which allows us to draw the silhouettes with total flexibility