Generation of Digital Elevation Models (DEM) by means of Photogrammetric Techniques using CARTA-2005 Imagery
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| Autores: | , |
|---|---|
| Format: | artículo original |
| Status: | Versión publicada |
| Fecha de Publicación: | 2013 |
| Beskrivelse: | The CARTA-2005 mission aerial photographs were used to generate Digital Elevation Models (DEMs) for a 180 km2 study area located northwest of the city of Cartago, Costa Rica. Tested spatial resolutions included 2, 5 and 10 m. A total of 42 Ground Control Points (GCPs) were used to establish the exterior orientation of the stereo block. ERDAS Imagine-LPS was selected as Photogrammetric Workstation. Various deficiencies were detected within the CARTA-2005 images, included poor scanning and radiometric contrast. Results show that after applying radiologic compensation and vector filters, satisfactory DEMs can be generated by means of these images. RMSE were below the pixel size regardless of the selected spatial resolution. CARTA-2005 must be used with care but it represents a valuable source of spatial information for the Costa Rican territory. |
| País: | Portal de Revistas TEC |
| Institution: | Instituto Tecnológico de Costa Rica |
| Repositorio: | Portal de Revistas TEC |
| Sprog: | Español |
| OAI Identifier: | oai:ojs.pkp.sfu.ca:article/1578 |
| Online adgang: | https://revistas.tec.ac.cr/index.php/tec_marcha/article/view/1578 |
| Palabra clave: | CARTA-2005 DEM ERDAS-LPS fotogrametría GCP. GCP Photogrammetry. |