arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.09223cs.CVcs.LGeess.IV
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深度学习引导的卫星影像点云建筑物重建

Deep Learning Guided Building Reconstruction from Satellite Imagery-derived Point Clouds

Purdue University(普渡大学);Columbia University(哥伦比亚大学);Kitware, Inc(Kitware公司)

Bo Xu, Xu Zhang, Zhixin Li, Matt Leotta, Shih-Fu Chang, Jie Shan

摘要:

基于遥感影像的城市建筑物三维重建在过去的二十年里引起了人们的极大关注。虽然航空图像和激光雷达提供更高的分辨率,但卫星图像更便宜,更有效地获取大规模需求。然而,卫星观测的高轨道高度带来了内在的挑战,如不可预测的大气影响,多视角,由于必要的多个视图,不同的土地覆盖和城市结构在场景中,小的基高比或窄视场的显着辐射差异,所有这些都可能降低3D重建质量。为了解决这些主要挑战,我们提出了一个可靠的和有效的方法来建立模型重建从多视角卫星图像生成的点云。我们利用多种类型的原始形状来拟合输入点云。具体而言,采用深度学习方法来区分复杂但嘈杂的场景中建筑物屋顶的形状。对于属于同一屋顶形状的点,提出了一种多线索,分层RANSAC方法,有效和可靠的分割和重建建筑物点云。在四个选定的城市地区(0.34至2.04平方公里的大小)的实验结果表明,该方法可以生成详细的屋顶结构在嘈杂的数据环境。建筑物形状识别的平均成功率为83.0%,而整体的完整性和正确性超过70%,参考地面真理从机载激光雷达创建。作为解决大规模城市模型生成的公众需求的第一次努力,开发被部署为开源软件。

英文摘要:

3D urban reconstruction of buildings from remotely sensed imagery has drawn significant attention during the past two decades. While aerial imagery and LiDAR provide higher resolution, satellite imagery is cheaper and more efficient to acquire for large scale need. However, the high, orbital altitude of satellite observation brings intrinsic challenges, like unpredictable atmospheric effect, multi view angles, significant radiometric differences due to the necessary multiple views, diverse land covers and urban structures in a scene, small base-height ratio or narrow field of view, all of which may degrade 3D reconstruction quality. To address these major challenges, we present a reliable and effective approach for building model reconstruction from the point clouds generated from multi-view satellite images. We utilize multiple types of primitive shapes to fit the input point cloud. Specifically, a deep-learning approach is adopted to distinguish the shape of building roofs in complex and yet noisy scenes. For points that belong to the same roof shape, a multi-cue, hierarchical RANSAC approach is proposed for efficient and reliable segmenting and reconstructing the building point cloud. Experimental results over four selected urban areas (0.34 to 2.04 sq km in size) demonstrate the proposed method can generate detailed roof structures under noisy data environments. The average successful rate for building shape recognition is 83.0%, while the overall completeness and correctness are over 70% with reference to ground truth created from airborne lidar. As the first effort to address the public need of large scale city model generation, the development is deployed as open source software.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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