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arXiv 2103.07202cs.CV
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基于图割的SAR层析成像城市地表重建

Urban Surface Reconstruction in SAR Tomography by Graph-Cuts

Télécom ParisTech, Université Paris-Saclay(巴黎萨克雷大学电信学院);Univ Lyon, UJM-Saint-Etienne(里昂大学,圣艾蒂安大学);ONERA, The French Aerospace Laboratory(法国航空航天研究院);Institute of Electronics and Telecommunications of Rennes (IETR), University of Rennes 1(雷恩第一大学雷恩电子与电信研究所)

Clément Rambour, Loïc Denis, Florence Tupin, Hélène Oriot, Yue Huang, Laurent Ferro-Famil

摘要:

SAR(合成孔径雷达)层析重建三维体积从堆栈的SAR图像。TerraSAR-X等高分辨率卫星提供的图像可以组合成3D模型。在城市地区,稀疏先验一般在层析反演过程中执行,以检索在给定的雷达分辨率单元内看到的散射体的位置。然而,这样的先验常常错过城市表面的部分。那些缺失的部分通常是平坦区域的区域,例如地面或屋顶。本文介绍了一种基于流动网络最优割计算的曲面分割算法。这种分割过程可以包括在3-D重建框架内,以提高城市表面的恢复。一个TerraSAR-X层析数据集上的插图展示了该方法产生城市表面(如地面、立面和屋顶)的3-D模型的潜力。

英文摘要:

SAR (Synthetic Aperture Radar) tomography reconstructs 3-D volumes from stacks of SAR images. High-resolution satellites such as TerraSAR-X provide images that can be combined to produce 3-D models. In urban areas, sparsity priors are generally enforced during the tomographic inversion process in order to retrieve the location of scatterers seen within a given radar resolution cell. However, such priors often miss parts of the urban surfaces. Those missing parts are typically regions of flat areas such as ground or rooftops. This paper introduces a surface segmentation algorithm based on the computation of the optimal cut in a flow network. This segmentation process can be included within the 3-D reconstruction framework in order to improve the recovery of urban surfaces. Illustrations on a TerraSAR-X tomographic dataset demonstrate the potential of the approach to produce a 3-D model of urban surfaces such as ground, façades and rooftops.

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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