PRECISE AERIAL IMAGE ORIENTATION USING SAR GROUND CONTROL POINTS FOR MAPPING OF URBAN LANDMARKS

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

Kurz, F.^1¹ 

[1] DLR – German Aerospace Center, 82234 Oberpfaffenhofen, Germany^1

关键词: Aerial Imagery;    Georeferencing Accuracy;    Radar-GCPs;    Geodetic SAR Processing;    Bundle Adjustment;    Automatic GCP detection;   

DOI  :  10.5194/isprs-archives-XLII-2-W13-61-2019

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

Highly precise ground control points, which are globally available, can be derived from the SAR satellite TerraSAR-X. This opens up many new applications like for example the precise aerial image orientation. In this paper, we propose a method for precise aerial image orientation using spaceborne geodetic Synthetic Aperture Radar Ground Control Points (SAR-GCPs). The precisely oriented aerial imagery can then be used e.g. for mapping of urban landmarks, which support the ego-positioning of autonomous cars. The method for precise image orientation was validated based on two aerial image data sets. SAR-GCPs were measured in images, then the image orientation has been improved by a bundle-adjustment. Results based on check points show, that the accuracy of the image orientation is better than 5 cm in X and Y coordinates.

【 授权许可】

CC BY