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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wang Weian Qiao Gang |
| Copyright Year | 2009 |
| Description | Author affiliation: Department of Surveying and Geo-Informatics, Tongji University, Shanghai, China (Wang Weian; Qiao Gang) |
| Abstract | Much research work has been done concerning the geometric accuracy for High-Resolution Satellite Imagery (HRSI), the conclusion regarding this respect in photogrammetric society is that Ground Control Points (GCPs) are necessary for the accurate geo-positioning to get meter or sub-meter positioning accuracy. But most existing publications are about the horizontal positioning determination rather than vertical direction. This paper aims to evaluate the geo-positioning capability in vertical direction for HRSI and analyze the influence of GCPs vertical distribution to that of the final vertical accuracy. The study is performed in Shanghai, China, the typical metropolis, using a pair of across-track QuickBird stereo imagery, within a relatively small but representative area filled with very high buildings to provide height difference for GCPs and Independent Check Points (ICPs). A new accuracy evaluation scheme in vertical direction is put forward and employed in the assessment. Processed with the Rational Function Model (RFM) and its accuracy improvement models in image space, some relations are found between the GCPs height and obtainable ICPs vertical accuracy in different height ranges, discussions and conclusions are presented in the end. |
| Starting Page | 1 |
| Ending Page | 9 |
| File Size | 1533312 |
| Page Count | 9 |
| File Format | |
| ISBN | 9781424434602 |
| DOI | 10.1109/URS.2009.5137728 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-05-20 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Earth Image sensors Solid modeling Satellites Image resolution Costs Laser radar High-resolution imaging Sensor phenomena and characterization Protection |
| Content Type | Text |
| Resource Type | Article |
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