【摘要】 倾斜摄影是一种高效、低成本的三维建模技术,被越来越广泛地应用于城市三维重建当中。由于其通过空中作业获取地面影像数据,不可避免地会产生局部遮挡现象,使得在空三加密过程中出现点云漏洞,导致三维模型在相应部位出现拉花、变形现象。为解决倾斜摄影技术的遮挡问题,从而实现模型的精细化,提出倾斜摄影与地面激光点云融合建模的方法。研究表明:①基于倾斜摄影的三维模型在有遮挡区域会出现明显的扭曲变形;②地面激光点云可以修补缺失的影像点云;③倾斜摄影与地面激光点云融合建模可以明显地提高模型的精细度。更多还原

【Abstract】 Tilt photography is a high efficient and low-cost 3D modeling technology that is increasingly used in urban 3D reconstruction.Because it acquires ground image data through air operations,local occlusion phenomenon will inevitably occur,which causes a point cloud vulnerabilities in the process of air three encryption,resulting in three-dimensional model appearing in the corresponding parts.In order to solve the occlusion problem of tilt photography,and to achieve the refinement of the model,a method of fusion modeling between tilt photography and ground laser point cloud is proposed.The research shows that:①The 3D model based on tilt photography will have obvious distortion in the occluded area.②The ground laser point cloud can repair the missing image point cloud.③The tilt photography and ground laser point cloud fusion modeling can significantly improve the model.accuracy.更多还原