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Details van artikel 23 van 268 gevonden artikelen
| Titel: |
An investigation into the spatial accuracy of the IKONOS 2 orthoimagery within an urban environment |
| Auteur: |
Ganas, A. Lagios, E. Tzannetos, N. |
| Verschenen in: |
International journal of remote sensing |
| Paginering: | Jaargang 23 (2002) nr. 17 pagina's 3513-3519 |
| Jaar: |
2002-09-10 |
| Inhoud: |
This letter reports the results of an orthorectification exercise applied to a panchromatic IKONOS image (GEO format) from the city of Athens, Greece; a region with gentle relief. Seventeen ground control points (GCPs) were collected within the framework of a differential GPS campaign, and were inserted to the orthorectification model together with a 20 m digital elevation model. The root mean square error at the GCPs was less than 0.6 pixels, while the same error at the checkpoints was less than 1 pixel. This shows that in areas where elevation changes are not large, the necessity for large-scale DEMs is diminished. We also show that users can process GEO data to the same standards of accuracy available from the Precision IKONOS data all at a lower cost and in less time. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 23 van 268 gevonden artikelen
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