数字农科院2.0

Research on 3D Reconstruction Methods for Incomplete Building Point Clouds Using Deep Learning and Geometric Primitives

文献类型： 外文期刊

作者： Ziqi Ding;Yuefeng Lu;Shiwei Shao;Yong Qin;Miao Lu;Zhenqi Song;Dengkuo Sun

作者机构：

关键词： deep learning;point cloud completion;point cloud processing;three-dimensional reconstruction

期刊名称： Remote Sensing

ISSN： 2072-4292

年卷期： 2025 年 17 卷 3 期

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Point cloud data, known for their accuracy and ease of acquisition, are commonly used for reconstructing level of detail 2 (LoD-2) building models. However, factors like object occlusion can cause incompleteness, negatively impacting the reconstruction process. To address this challenge, this paper proposes a method for reconstructing LoD-2 building models from incomplete point clouds. We design a generative adversarial network model that incorporates geometric constraints. The generator utilizes a multilayer perceptron with a curvature attention mechanism to extract multi-resolution features from the input data and then generates the missing portions of the point cloud through fully connected layers. The discriminator iteratively refines the generator’s predictions using a loss function that is combined with plane-aware Chamfer distance. For model reconstruction, the proposed method extracts a set of candidate polygons from the point cloud and computes weights for each candidate polygon based on a weighted energy term tailored to building characteristics. The most suitable planes are retained to construct the LoD-2 building model. The performance of this method is validated through extensive comparisons with existing state-of-the-art methods, showing a 10.9% reduction in the fitting error of the reconstructed models, and real-world data are tested to evaluate the effectiveness of the method.

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