We present in this paper a new particle-based method for sampling and rendering several types of the nonphotorealistic feature contours on implicit surfaces: silhouette, shadow and suggestive contours. We introduce a curve adhesion behavior for dynamic particles that brings up the possibility to render any contour that is defined as an intersection of two smooth implicit surfaces. In the case o...

The nonphotorealistic rendering is recognized as one of the major topics in the recent computer graphics society. The general issue in this research area is achieving methods for imitating the artists’ rendering styles, such as oil-paintings, technical illustration, etc. The painterly rendering is one of the nonphotorealstic rendering methods dealing with the effects as the oil-paintings. It is...

This paper describes how technical illustrations containing opaque and non-opaque objects can be automatically generated. Traditional methods to show transparency in manual drawings are evaluated to extract a small and effective set of rules for computer-based rendering of technical illustrations, leading to a novel view-dependent transparency model. We propose a hardware-accelerated depth sort...