Occlusion Culling Algorithm for Rendering Complex Building Scene Based on the Normal Line Grouping

摘要

Rendering complex building scene like ancient architecture heritage is always a difficult work since there is very high occlusion ratio. According to the architectural structure and the data organization strategy of 3D ChiLin models, a new occlusion culling algorithm is proposed, which is based on the normal line grouping of the models concerned with the building features. By integrating with other accelerate methods such as frustum culling, detail culling, LOD and classifying rendering, this algorithm can improve the rendering speed efficiently.