Very high resolution SAR tomography using multiple data stacks from different viewing angles enables us for the first time to generate 4D point clouds of the illuminated area from space with a point density comparable to LiDAR. They can be potentially used for façade reconstruction and monitoring in urban environment. In this paper, we propose an approach for façade detection and reconstruction from such point clouds. Firstly, the façade region is extracted by thresholding the point density on the ground plane. The extracted façades points are then clustered into segments corresponding to individual façades by means of slope analysis. Surface (flat or curved) model parameters of the segmented building façades are further estimated. Finally, the elevation estimates of each raw TomoSAR point is refined by using its more accurate azimuth and range coordinates, and the corresponding reconstructed surface model of the façade. The proposed approach is illustrated and validated by examples using TomoSAR point clouds generated from a stack of 25 TerraSAR-X high spotlight images.     «

Very high resolution SAR tomography using multiple data stacks from different viewing angles enables us for the first time to generate 4D point clouds of the illuminated area from space with a point density comparable to LiDAR. They can be potentially used for façade reconstruction and monitoring in urban environment. In this paper, we propose an approach for façade detection and reconstruction from such point clouds. Firstly, the façade region is extracted by thresholding the point density on t...     »

Synthetic aperture radar, Image reconstruction, Urban areas, SAR tomography (TomoSAR), radar imaging, Surface reconstruction, 4D point clouds, LiDAR, Image segmentation, Point clouds, Buildings, TerraSAR-X, geophysical image processing, image resolution, remote sensing by radar, reconstructed surface model, TomoSAR point clouds, façade reconstruction, very high resolution SAR tomography, TerraSAR-X high spotlight images, facade detection approach, facade reconstruction approach, facade structure reconstruction, segmented building parameters, slope analysis, spaceborne TomoSAR point clouds, surface model parameters, Laser radar, geophysical techniques, spaceborne radar     «

Synthetic aperture radar, Image reconstruction, Urban areas, SAR tomography (TomoSAR), radar imaging, Surface reconstruction, 4D point clouds, LiDAR, Image segmentation, Point clouds, Buildings, TerraSAR-X, geophysical image processing, image resolution, remote sensing by radar, reconstructed surface model, TomoSAR point clouds, façade reconstruction, very high resolution SAR tomography, TerraSAR-X high spotlight images, facade detection approach, facade reconstruction approach, facade structure...     »