基于无人机航拍配合ContextCapture和CASS3D在土方计算与施工中的应用

Application of UAV Aerial Photography Combined with Context Capture and CASS3D in Earthwork Calculation and Construction

传统航拍成果通常缺乏与工程设计图纸的结合,将无人机航拍结合Context Capture和CASS3D应用于土方计算与施工中,使用无人机航拍可获取大范围的高分辨率影像数据,通过Context Capture软件进行图像处理和三维重建,生成精确的数字地图和三维模型。利用CASS3D数据处理性能和多样化稳定高效处理模式,结合Context Capture产出的三维模型数据,在CASS3D平台下加载和同步矢量设计图纸分析DSM(数字地表模型),进行三维数据采集、编辑、DLG成图,完成大面积土方量测量,快速生成方格网,计算土方量。通过融合自然现状与工程设计图纸,从而模拟建设与现状地物冲突及关键节点处的接驳,以提早发现工程建设过程中可能遇到的问题。相比传统测量方法,该法精度更稳定可靠,满足土方算量要求,大幅度提高施工效率。

Traditional aerial photography results usually lack the combination with engineering design drawings,UAV aerial photography combined with Context Capture and CASS3D is applied to earthwork calculation and construction,UAV aerial photography can obtain a wide range of high-resolution image data.Through Context Capture software,image processing and three-dimensional reconstruction are carried out to generate accurate digital maps and three-dimensional models.Using CASS3D data processing performance and diversified stable and efficient processing mode,combined with the three-dimensional model data produced by Context Capture,the DSM(digital surface model)is analyzed by loading and synchronizing vector design drawings under the CASSSD platform.Three-dimensional data acquisition,editing,DLG mapping,complete large-area earthwork measurement,quickly generate square grids,and calculate earthwork.By integrating the natural status quo with the engineering design drawings,the conflict between the construction and the status quo and the connection at the key nodes are simulated,to find out the problems may be encountered in advance.Compared with the traditional measurement method,the accuracy of this method is more stable and reliable,which meets the requirements of earthwork calculation and greatly improves the construction efficiency.