Texture-Meshes in Digital Museum: Octree-Initialized Progressive Transmission with Feature Preservation

摘要

In order to decrease the data volume of 3D textured models in digital museum with significant features preservation, a new simplification method for texture-mesh based on triangle collapse is presented. By introducing the concepts of geometry and texture boundary, the quadric error matrices are improved, and constraint strategies are adopted to retain the feature of geometry boundaries and texture attributes during the simplification process. In addition, a method combining octree-based compression with progressive mesh is given to provide a continuous multi-resolution representation of 3D models. The proposed methods have been successfully applied to progressive transmission and representation system of 3D models in digital museums.