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Communication dans un congrès
GEOBIA using very high spatial and temporal resolution radar and optical imagery in tracking water level fluctuations in a freshwater reservoir
GEOBIA using very high spatial and temporal resolution radar and optical imagery in tracking water level fluctuations in a freshwater reservoir
Abstract : Tracking water level fluctuations is important to the study and management of waterbodies. A geographic object-based image analysis using very high spatial and temporal radar interferometry (Cosmo-Skymed and TerraSAR-X) and optical (Pléiades) imagery is adopted in this study for this purpose. A linear regression model was sufficient to correlate the water surface area of a mildly sloping and unencumbered littoral zone spatial subset (extracted from 14 images) to water surface altitude data from the field. Results are excellent (R² = 0.963 and RMSE = 0.42 m for the unsupervised classification, with over 99% of land and water areas well-classified for radar images and 78.91% for optical images) albeit limited by the need for field data and the presence of a mildly sloping and unencumbered littoral zone. Potential solutions to overcome this limitation are briefly discussed.
https://hal.inrae.fr/hal-02600902
Déposant : Migration Irstea Publications <>
Soumis le : samedi 16 mai 2020 - 05:36:49
Dernière modification le : vendredi 10 juillet 2020 - 10:14:06
Déposant : Migration Irstea Publications <>
Soumis le : samedi 16 mai 2020 - 05:36:49
Dernière modification le : vendredi 10 juillet 2020 - 10:14:06
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