We present a method for automatically rendering pen-and-ink illustrations of trees. A given 3-d tree model is illustrated by the tree and a visual representation of the foliage us...
We describe a compression scheme for the geometry component of 3D animation sequences. This scheme is based on the principle component analysis (PCA) method, which represents the ...
Abstract. NPR Lenses is an interactive technique for producing expressive non-photorealistic renderings. It provides an intuitive visual interaction tool for illustrators, allowing...
Petra Neumann, Tobias Isenberg, M. Sheelagh T. Car...
For the generation of freeform 3D models, one of the most intuitive solution is to use sketch-based modeling environments. Unfortunately, since the user interface relies upon the a...
Shading has a great impact to the human perception of 3D objects. Thus, in order to create or to deform a 3D object, it seems natural to manipulate its perceived shading. This pape...