摘要
点云(point cloud)为三维空间坐标系下的离散点集,是一种重要的几何数据,能有效表示物体表面信息。随着三维激光扫描技术的快速发展和普及,三维点云的采集变得更加简单便捷。点云分类,即为每个点分配一个语义标记。此外,点云分类作为三维数据处理的关键环节,在三维重建,数字化建模,文物保护等方面具有广泛的应用价值。此次调研围绕不同三维激光扫描点云在数据采集,特征提取这两方面主要工作,展示了点云分类方法的研究现状,并对该领域未来发展趋势进行总结展望。
Point cloud is a set of discrete points in three-dimensional space coordinate system. It's an important geometric data that can effectively represent the surface information of an object. With the rapid development and popularization of3 D laser scanning technology, the acquisition of 3 D point cloud becomes simpler and more convenient. Point cloud classification, is that assign a semantic label to each point. In addition, as a key link of 3 D data processing, point cloud classification has wide application value in 3 D reconstruction, digital modeling and cultural relic protection. The survey briefly introduces the classification methods based on point cloud in two aspects: capturing, feature extraction. Finally, it presented some future perspectives.
引文
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