DSM/DEM/DOM等测绘4d产品

基于区域网平差优化后的卫星影像（航空影像）及定向参数，开展空中三角测量，利用前后视创建立体像对，利用全自动影像匹配技术进行密集点云匹配，生产数字表面模型，通过人机交互方式，编辑匹配错误区域如水面、植被、建筑等，生产出DSM。对于非地面高程区域，进行滤波编辑，将林地、建筑物、桥梁等地表高程降至地面，生产出DEM。以项目需求为准，生产出DSM/DEM/DOM/DLG等测绘4d产品。

Based on satellite and aerial imagery as well as orientation parameters optimized through block adjustment, aerial triangulation is performed. Stereo image pairs are established using forward and backward views, followed by dense point cloud matching via fully automatic image matching technology to produce the initial Digital Surface Model (DSM). Then, human-computer interaction is utilized to edit mismatched regions such as water bodies, vegetation, buildings and other areas, to obtain the refined DSM. For non-ground elevation areas, filtering and editing are conducted to adjust the surface elevations of woodlands, buildings, bridges and other features down to ground level, thus generating the Digital Elevation Model (DEM). Finally, in accordance with project requirements, four core surveying and mapping products including DSM, DEM, Digital Orthophoto Map (DOM) and Digital Line Graphic (DLG) can be produced.

搜集汇总

背景与挑战

背景概述

该数据集包含基于卫星或航空影像生产的测绘4D产品（DSM/DEM/DOM/DLG），通过全自动影像匹配和人机交互编辑技术生成，适用于需要高精度地表模型的应用场景。