Real-time sketch rendering A system for non photo realistic rendering, mimicking graphite pencil drawings.
This paper presents a real-time technique for rendering 3D surfaces in a pencil drawing
style. It is fundamentally based on a paper which introduces a real-time pencil rendering
system (Lee et al., 2006). The authors uses strokes drawn along the principal curvature
directions to shade the interior of a 3D surface. The main focus of this thesis has been
to implement a sketching system with a good support of arbitrary surfaces which are not
uniformly tessellated and to provide results on par with the paper (Lee et al., 2006). To
handle arbitrary surfaces which are not uniformly tessellated, a new way of computing a
curvature direction eld has been implemented. This paper presents an implementation
which visualize the outline of a surface and manages to sketch the geometry of complex
surfaces in good quality.