基于优视摄影测量的天-空-地协同实景三维构建方法

Collaborative space,aerial and ground real 3D construction method based on optimized views photogrammetry

随着信息技术的发展,实景三维模型已成为城市数字空间的数据基础。新兴无人机摄影测量方法通常以粗略模型为依据,通过多次飞行完成建模,存在效率低下和计算资源浪费问题。本文以优视摄影测量方法为技术基础,提出了天-空-地协同实景三维构建方法:使用卫星影像重建生成概略模型,并优化生成无人机实景三维数据采集方案,同时结合地面补拍,实现精细化实景三维数据采集及建模。试验结果表明,相比于常规的倾斜摄影测量方法,协同实景三维构建方法能够在保证相对高效率和便利性的前提下,实现高质量的精细化实景三维模型生产和输出。

With the development of information technology,the real 3D model has become the basic data of the urban digital space.Emerging UAV photogrammetry methods are based on rough models and completed by multiple flights,which have problems of low efficiency and waste of computing resources.On the basis of optimized views photogrammetry method,this paper proposes a collaborative Space,Aerial and Ground real 3D construction method:a rough model is generated via the satellite image 3D reconstruction,with which the UAV real scene 3D data acquisition scheme is optimized,and ground supplementary photography combined to achieve fine real scene 3D data acquisition and modeling.The experiment results show that,compared with the conventional oblique photogrammetry method,the collaborative real scene 3D construction method can achieve high-quality refined real scene 3D model production under the premise of ensuring relatively high efficiency and convenience.