3-Dimentional Mapping Coastal Zone using High Resolution Satellite Stereo Imageries

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Hong, Zhonghua^1,2 ; Liu, Fengling^1 ; Zhang, Yun^1

College of Information Technology, Shanghai Ocean University, 999 Hucheng Huan Road, Shanghai, China^1

College of Surveying and Geo-informatics and Research, Tongji University, 1239 Siping Road, Shanghai, China^2

关键词: Digital surface model (DSM);    Geometric processing;    Geometric relationships;    Ground control points;    High resolution satellites;    Interpolation method;    metropolitan;    Stereo imagery;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012098/pdf
DOI  :  10.1088/1755-1315/17/1/012098

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The metropolitan coastal zone mapping is critical for coastal resource management, coastal environmental protection, and coastal sustainable development and planning. The results of geometric processing of a Shanghai coastal zone from 0.7-m-resolution QuickBird Geo stereo images are presented firstly. The geo-positioning accuracy of ground point determination with vendor-provided rigorous physical model (RPM) parameters is evaluated and systematic errors are found when compared with ground control points surveyed by GPS real-time kinematic (GPS-RTK) with 5cm accuracy. A bias-compensation process in image space that applies a RPM bundle adjustment to the RPM-calculated 3D ground points to correct the systematic errors is used to improve the geo-positioning accuracy. And then, a area-based matching (ABM) method is used to generated the densely corresponding points of left and right QuickBird images. With the densely matching points, the 3-dimentinal coordinates of ground points can be calculated by using the refined geometric relationship between image and ground points. At last step, digital surface model (DSM) can be achieved automatically using interpolation method. Accuracies of the DSM as assessed from independent checkpoints (ICPs) are approximately 1.2 m in height.