Several ground truth measurement campaigns have been carried out on significant crop and hillslope portions of the Montespertoli X-SAR/SIR-C test site in order to gather data regarding vegetation cover, land-use, soil moisture and soil roughness. A new technique for the evaluation of the latter is here presented, based on a completely automated terrestrial photogrammetric method. On chosen transects along meaningful directions on hillslopes of the area, a series of digital photographic stereopairs were taken with the help of a special double-camera instrument realized for the purpose. Afterwards a series of 1 by 1 meter DTMs were generated by the modeling software and then connected to each other. For the measurement and parameterization of the relative soil roughness the whole surveyed three-dimensional surface was considered and the classical statistical parameters were replaced with those generated by geostatistic methods in the framework of a self-similar surface characterization.
Ground truth roughness measurement for SIR-C/X-Sar images: a photogrammetric approach in the Montespertoli test site / Catani F.; Bianchi F.; Moretti S.. - STAMPA. - 5:(2000), pp. 2014-2016. (Intervento presentato al convegno Intenational Geoscience and Remote Sensing Symposium (IGARSS 2000) tenutosi a Honolulu, HI, USA nel 24-28 July 2000) [10.1109/IGARSS.2000.858250].
Ground truth roughness measurement for SIR-C/X-Sar images: a photogrammetric approach in the Montespertoli test site
CATANI, FILIPPO;MORETTI, SANDRO
2000
Abstract
Several ground truth measurement campaigns have been carried out on significant crop and hillslope portions of the Montespertoli X-SAR/SIR-C test site in order to gather data regarding vegetation cover, land-use, soil moisture and soil roughness. A new technique for the evaluation of the latter is here presented, based on a completely automated terrestrial photogrammetric method. On chosen transects along meaningful directions on hillslopes of the area, a series of digital photographic stereopairs were taken with the help of a special double-camera instrument realized for the purpose. Afterwards a series of 1 by 1 meter DTMs were generated by the modeling software and then connected to each other. For the measurement and parameterization of the relative soil roughness the whole surveyed three-dimensional surface was considered and the classical statistical parameters were replaced with those generated by geostatistic methods in the framework of a self-similar surface characterization.File | Dimensione | Formato | |
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