大区域实景三维模型拼接融合方法及应用

Method and Application of Large Area Realistic 3D Model Splicing and Fusion

随着实景三维中国建设的开展,大区域实景三维重建与更新已成为迫切需求,其建模面积大、模型成果异构、多尺度等特点导致场景拼接与融合成为丞待解决的问题,本文分别从影像及控制点重叠建立空三工程、包含相同控制点的空三工程融合2个角度,探究了从数据处理中实现三维场景拼接的方法,其次从模型成果的角度通过邻域瓦块的几何拓扑优化实现三维场景无缝拼接,文章对3种方法进行了试验对比及适用性分析,该研究解决了大场景三维模型拼接的问题,促进了实景三维高效高质建设。

Accompanying with the development of the construction of 3D real scene in China,the reconstruction and updating of large scale real 3D models has become an urgent demand.The characteristics of its large modeling area,heterogeneous model results,and multi-scale have made scene splicing and fusion an urgent problem to be solved.In this paper,from the aspects of establishing spatial engineering with overlapping images and control points,and integrating spatial engineering with the same control points,the method of implementing 3D scene stitching from data processing has been explored.The applicability of three methods has been tested and compared through experiments.It can solve the problem of large scale 3D model stitching and promotes the efficient and high quality construction of real 3D scenes.