Building wall line extraction method based on unmanned aerial vehicle laser radar point cloud

The invention relates to the technical field of building wall line extraction, and particularly discloses a building wall line extraction method based on unmanned aerial vehicle laser radar point cloud. Collected mass point cloud data is preprocessed, and a data source suitable for building feature extraction is obtained after terrain filtering, ground feature extraction and the like; and the method aims at automatically extracting and drawing wall lines of buildings in different shapes, simplifying and regularizing the preliminarily extracted rough wall lines, and finally obtaining a real building. The method is simple and orderly in data processing mode, high in data extraction accuracy and accurate in obtained result, solves the problem of inaccurate building wall line extraction in the prior art, and is suitable for wide popularization and application. 本发明涉及建筑物墙线提取技术领域，特别公开了一种基于无人机激光雷达点云的建筑物墙线提取方法。本发明对收集的海量点云数据进行预处理，经过地形滤波和地物提取等步骤后，以获取适合建筑物特征提取的数据源；目标是将不同形状建筑的墙线自动的提取绘制出来，并对初步提取的粗糙的墙线进行简化和规则化，最终得到真实的建筑物。本发