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首页> 外文会议>International Society for Photogrammetry and Remote Sensing Congress >SEMIAUTOMATIC 3D MAPPING OF BUILDINGS FROM MEDIUM SCALE (1:40,000) AERIAL PHOTOGRAPHS
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SEMIAUTOMATIC 3D MAPPING OF BUILDINGS FROM MEDIUM SCALE (1:40,000) AERIAL PHOTOGRAPHS

机译：中等规模（1：40,000）空中照片的建筑物半自动3D映射

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In the last decade, much of the research dealing with 3D building extraction from aerial photographs has been carried out by the photogrammetry and computer vision communities. The increased usage of 3D City Spatial Information Systems and National GISs for control, management and planning, necessitated development of fully or semi-automatic methods for establishing and updating these systems. Most research tries to reconstruct the building space from large (approx1:4,000) scale photographs, mainly for establishing or updating the 3D city model systems. However, the research presented in this paper focuses on 3D mapping from medium scale (approx1:40,000) aerial photographs, specifically for establishing and updating the building layer in nationwide GIS databases. The algorithm developed for semi-automatic building mapping is based on a 2D approach to solving the 3D reality. The algorithm consists of five consecutive stages: pre-processing, left image operations, height extraction, right image operations and final mapping of the buildings. The first stage is the only stage performed manually in order to achieve specific goals: model solution, photograph preparation and designating the desired building roof. From the second stage onwards, the process is fully automatic. This algorithm can be employed in two ways, either as part of a fully automatic mapping of all buildings in the overlapping area, or as stand alone, enabling a new technology for semiautomatic mapping within a non-stereoscopic environment, without using 3D spectacles. Based on the algorithm, a system for semi-automatic mapping of buildings was developed in order to test its efficiency and accuracy. The results are satisfactory with an accuracy of 0.5m for planimetric measurement and 1m for altimetric measurement.
机译：在过去十年中，许多研究处理来自航空照片的3D建筑物提取已被摄影测量与计算机视觉的社区进行。城市三维空间信息系统与国家地理信息系统的控制，管理和规划，建立和更新这些系统完全或半自动化的方法开发必要的使用量增加。大多数的研究中，尝试从大（approx1：4000）重建的建筑空间尺度的照片，主要是创建或更新的3D城市模型系统。然而，在这个文件中提出的研究主要集中在来自中等规模（approx1：40,000）3D地图航拍照片，特别是建立和更新全国中地理信息系统数据库建设层。半自动建筑映射开发的算法是基于二维的方法来解决的3D现实。该算法包含连续的五个阶段：前处理，左图像操作，高度的提取，对图像操作和建筑物的最终映射。第一阶段是唯一的阶段，以达到具体的目标手动执行：模型的解决方案，拍摄准备并指定所希望的建筑物屋顶。从第二级起，处理是全自动的。该算法可以通过两种方式来使用，无论是作为在重叠区域内所有建筑物的全自动映射的一部分，或作为独立，实现了新的技术，非立体环境中半自动映射，而无需使用3D眼镜。基于该算法上，用于建筑物的半自动映射的系统，以测试它的效率和准确度被开发。结果是用0.5M的对地上物测量和1M用于高程测量的精度令人满意。

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