Rich scatterer information retrieved by very high resolution SAR tomography using multiple data stacks from different viewing angles enables us to generate 4D point clouds of the illuminated area from space. They can be potentially used for facade reconstruction and deformation monitoring in urban environment. In this paper, we propose an approach for façade detection and reconstruction from such point clouds. Firstly, the building façade points are extracted from the point density projected onto the ground plane. The extracted façade points are segmented into corresponding individual façades by means of orientation analysis. Surface (flat or curved) model parameters of the segmented building façades are further estimated. Finally, the elevation estimate 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 fused TomoSAR point clouds generated from two stacks of TerraSAR-X high spotlight images from both ascending and descending orbits.     «

Rich scatterer information retrieved by very high resolution SAR tomography using multiple data stacks from different viewing angles enables us to generate 4D point clouds of the illuminated area from space. They can be potentially used for facade reconstruction and deformation monitoring in urban environment. In this paper, we propose an approach for façade detection and reconstruction from such point clouds. Firstly, the building façade points are extracted from the point density projected ont...     »

Synthetic aperture radar, Image reconstruction, radar imaging, Image segmentation, TerraSAR-X, geophysical image processing, remote sensing by radar, urban environment, buildings (structures), 4D point cloud generation, SAR tomography resolution, azimuth coordinate, building facade point extraction, building facade point segmentation, building facade reconstruction, elevation estimation, facade detection, ground plane, multidata stack, multiview TomoSAR point cloud, orientation analysis, point density projection, range coordinate, reconstructed surface model, scatterer information retrieval, spotlight image, surface model parameter, deformation, electromagnetic wave scattering, feature extraction, object detection, deformation monitoring, digital elevation models     «

Synthetic aperture radar, Image reconstruction, radar imaging, Image segmentation, TerraSAR-X, geophysical image processing, remote sensing by radar, urban environment, buildings (structures), 4D point cloud generation, SAR tomography resolution, azimuth coordinate, building facade point extraction, building facade point segmentation, building facade reconstruction, elevation estimation, facade detection, ground plane, multidata stack, multiview TomoSAR point cloud, orientation analysis, point d...     »