1. Visibility based methods and assesment for detail-recovery
- Author
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Marco Tarini, Paolo Cignoni, and Roberto Scopigno
- Subjects
Three-Dimensional Graphics and Real- ism: Color ,shading ,shadowing ,and texture, Simplification ,texture mapping ,detail recovery ,normal mapping ,texture for geometry ,Computer science ,Computation ,Set (abstract data type) ,Computer graphics ,Image texture ,Computer vision ,Polygon mesh ,Image restoration ,and texture ,business.industry ,Visibility (geometry) ,Normal mapping ,Artificial intelligence ,Simplification ,business ,Texture mapping ,Algorithm - Abstract
In this paper we propose a new method for the creation of normal maps for recovering the detail on simplified meshes and a set of objective techniques to metrically evaluate the quality of different recovering techniques. The proposed techniques, that automatically produces a normal-map texture for a simple 3D model that "imitates" the high frequency detail originally present in a second, much higher resolution one, is based on the computation of per-texel visibility and self-occlusion information. This information is used to define a point-to-point correspondence between simplified and hires meshes. Moreover, we introduce a number of criteria for measuring the quality (visual or otherwise) of a given mapping method, and provide efficient algorithms to implement them. Lastly, we apply them to rate different mapping methods, including the widely used ones and the new one proposed here.
- Published
- 2003