Semantic Segmentation and Roof Reconstruction of Urban Buildings Based on LiDAR Point Clouds
Bibliographic Data
| ID | 22031291 |
|---|---|
| Authors | Xiaokai Sun (0009-0001-2906-7255, Shandong University of Technology), Baoyun Guo (0000-0001-5413-2816, Shandong University of Technology, corresponding author), Cailin Li (0000-0001-6275-9475, Shandong University of Technology), Na Sun (0000-0002-4177-4761, Shandong University of Technology), Yue Wang (0000-0001-8527-9175, Shandong University of Technology), Yukai Yao (Shandong University of Technology) |
| Year | 2024 |
| Volume | 13 |
| Issue | 1 |
| Pages | 19 |
| Publication date | 2024-01-05 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | ISPRS International Journal of Geo-Information (JOURNAL) |
| Journal identifiers | ISSN: 2220-9964 • E-ISSN: 2220-9964 |
| Publisher | MDPI AG (PUBLISHER • IT) |
| DOI | 10.3390/ijgi13010019 |
| OpenAlex | W4390617226 |
| Language | EN |
| References cited | 46 |
In urban point cloud scenarios, due to the diversity of different feature types, it becomes a primary challenge to effectively obtain point clouds of building categories from urban point clouds. Therefore, this paper proposes the Enhanced Local Feature Aggregation Semantic Segmentation Network (ELFA-RandLA-Net) based on RandLA-Net, which enables ELFA-RandLA-Net to perceive local details more efficiently by learning geometric and semantic features of urban feature point clouds to achieve end-to-end building category point cloud acquisition. Then, after extracting a single building using clustering, this paper utilizes the RANSAC algorithm to segment the single building point cloud into planes and automatically identifies the roof point cloud planes according to the point cloud cloth simulation filtering principle. Finally, to solve the problem of building roof reconstruction failure due to the lack of roof vertical plane data, we introduce the roof vertical plane inference method to ensure the accuracy of roof topology reconstruction. The experiments on semantic segmentation and building reconstruction of Dublin data show that the IoU value of semantic segmentation of buildings for the ELFA-RandLA-Net network is improved by 9.11% compared to RandLA-Net. Meanwhile, the proposed building reconstruction method outperforms the classical PolyFit method
Cluster analysis · Computer vision · Data mining · Geography · Geometry · Lidar · Point cloud · RANSAC · Remote sensing · Roof · Segmentation · Structural engineering · 3D Surveying and Cultural Heritage · Automated Road and Building Extraction · Computer Science · Engineering · Mathematics · Remote Sensing and LiDAR Applications · Artificial Intelligence
| Citation velocity | historical |
|---|---|
| Highly cited | No |