Simplification Of Point-Based Geometry

With the development of 3D scan technique and the aspiration for the delicacy of real-world objects, Point-based graphics has experienced a major renaissance recently. Its basic pipeline includes model acquisition, processing and rendering. Model simplification belongs to the model processing phase. 《 Simplification of point-based geometry 》 computed the basic envelop, found the best offset by dichotomy, and then created the envelops inside and outside the original model. It incorporated the surfel pairs to reduce the number of surfels between envelops. It made use of the octree to accelerate the test of intersection. It takes the geometry properties of surfels into consideration. It is simple and preserves the sharp features.