城市级实景三维地理场景轻量化处理研究

Research on Lightweight Processing of Urban level Realistic 3D Geographic Scenes

城市级实景三维地理场景模型的几何空间结构复杂、纹理特征信息丰富,导致数据体量非常大,极大影响了实景三维应用效果和应用场景范围。为实现场景模型数据的高效轻量化,提出一种考虑特征点轮廓贡献值与纹理优化度的模型数据轻量化方法,从纹理可视化效果出发研究个性化轻量化方案。通过对实景三维郴州数据成果进行轻量化实验验证,该技术能够结合不同精细度应用需求实现不同的轻量化效果,为提升模型数据加载速度和应用效果提供了切实可行的方案。

The complex geometric spatial structure and rich texture feature information of urban level real-life 3D geographic scene models result in a very large data volume,greatly affecting the effectiveness and scope of real-life 3D applications.To achieve efficient lightweighting of scene model data,a model data lightweighting method considering the contribution value of feature point contour and texture optimization degree is proposed,and personalized lightweighting schemes are studied from the perspective of texture visualization effect.By conducting lightweight experiments on real-world 3D Chenzhou data results,this technology can achieve different lightweight effects by combining different precision application requirements,providing practical and feasible implementation solutions for improving model data loading speed and application effectiveness.