Perceptually guided simplification of lit, textured meshes

We present a new algorithm for best-effort simplification of polygonal meshes based on principles of visual perception. Building on previous work, we use a simple model of low-level human vision to estimate the perceptibility of local simplification operations in a view-dependent Multi-Triangulation structure. Our algorithm improves on prior perceptual simplification approaches by accounting for textured models and dynamic lighting effects. We also model more accurately the scale of visual changes resulting from simplification, using parametric texture deviation to bound the size (represented as spatial frequency) of features destroyed, created, or altered by simplifying the mesh. The resulting algorithm displays many desirable properties: it is viewdependent, sensitive to silhouettes, sensitive to underlying texture content, and sensitive to illumination (for example, preserving detail near highlight and shadow boundaries, while aggressively simplifying washed-out regions). Using a u...

• Type: Conference
• Year: 2003
• Where: SI3D
• Authors: Nathaniel Williams, David P. Luebke, Jonathan D. Cohen, Michael Kelley, Brenden Schubert
• Keywords: Computer Graphics, Local Simplification Operations, Prior Perceptual Simplification, SI3D 2003, Simplification