Interpolatory Adaptive Subdivision for Mesh LOD Editing

We propose an adaptive interpolatory scheme for subdivided triangle meshes that is compliant with the modified butterfly subdivision and can be used effectively and efficiently in selective editing of meshes. Our scheme is developed upon the RGB subdivision, an adaptive scheme that is based on the factorization of the one-tofour triangle split pattern. We introduce the concept of topological angle and related operators to efficiently navigate and edit an adaptively subdivided mesh. On the basis of this new scheme, we present an interactive application that allows a user to freely edit the Level of Detail of a model starting at a base mesh.