Authors: Yotam Livny Michael Press Jihad ElSana
Publish Date: 2007/12/25
Volume: 24, Issue: 4, Pages: 239-247
Abstract
In this paper we present a novel realtime cartoonstyle rendering approach which targets very large meshes Cartoon drawing usually uses a limited number of colors for shading and emphasizes special effects such as sharp curvature and silhouettes It also paints the remaining large regions with uniform solid colors Our approach quantizes light intensity to generate different shadow colors and utilizes multiresolution mesh hierarchy to maintain appropriate levels of detail across various regions of the mesh To comply with visual requirements our algorithm exploits graphics hardware programmability to draw smooth silhouette and color boundaries within the vertex and fragment processors We have adopted a simplification scheme that executes simplification operators without incurring extra simplification operations as a precondition The realtime refinement of the mesh which is performed by the graphics processing unit GPU dramatically improves image quality and reduces CPU load
Keywords: