Lidar and true-orthorectification of infrared aerial imagery of high Pinus sylvestris forest in mountainous relief
| Autor: | Valbuena Puebla, Ruben, Fernández de Sevilla, Tomás, Mauro Gutiérrez, Francisco, Pascual Castaño, Isabel Cristina, García Abril, Antonio, Martín Fernández, Susana, Manzanera de la Vega, José Antonio |
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| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Proceedings of SilviLaser 2008, 8th international conference on LiDAR applications in forest assessment and inventory, Heriot-Watt University, Edinburgh, UK, 17-19 September, 2008 | 8th international conference on LiDAR applications in forest assessment and inventory, Heriot-Watt University. | 17/09/2008-19/09/2008 | Edinburgh, UK. Archivo Digital UPM Universidad Politécnica de Madrid |
| Popis: | Combination of various data sources has been demonstrated more effective than using them separately. Information retrieval is significantly improved by synergies between laser scanner and optical imagery. Digital photography relies on traditional methods for orthorectification in order to accomplish an accurate correspondence with Lidar. We investigated combinatorial techniques in a high pine forest situated in mountainous relief in the Guadarrama Range (Spain). Results have shown critical inaccuracies in the integration of these data, even when obtained simultaneously. We propose the use of Lidar-derived Digital Surface Model in the process of orthorectification of aerial imagery. We hypothesised that the use of true-orthophoto techniques for improving the planimetric accuracy of VHR can be reliable for forestry applications. The methodology slightly improved the geometrical results obtained, though radiometric results might be meaningless. Consequently, other possible solutions are also discussed. |
| Databáze: | OpenAIRE |
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