METHOD AND DEVICE FOR ADAPTIVE REFINEMENT OF PROGRESSIVE MESH

摘要

PROBLEM TO BE SOLVED: To provide a method and a device 10 for adaptively refining a continuous arbitrary mesh representation 72 for a graphical geometric model according to changing view parameters 80.;SOLUTION: This method efficiently uses a selective refinement criteria for view-dependent parameters based on a view frustum 188, a surface orientation 190, and a screen-space geometric error 192 to produce graphical objects and images as graphical shapes. A real-time method for incrementally refining and coarsening the mesh according to the selective refinement criteria is also presented. The real-time method exploits graphical view coherence, and supports frame rate regulation. For continuous motions, the real-time method can be amortized over the whole of consecutive frames, and smooth visual transitions (shapes) can be constructed between two adaptively refined meshes used to represent a graphical object or image.;COPYRIGHT: (C)2008,JPO&INPIT