Seminars – 2019-2020

The seminars of OBELIX team are currently held every two weeks at the IRISA lab, Tohannic campus, room D106.

The seminar is coordinated by Chloé Friguet.

Previous seminars – 2019-2020


  • Date: November, 14
  • Room : D106
  • Speaker: Anne OSIO (Technical University of Kenya)
  • Title: Monitoring Riparian Vegetation Degradation using Sentinel-1 and Sentinel-2
  • Abstract: The study proposes a workflow for detection and classification of degrading acacia vegetation along Lake Nakuru riparian reserve. Dual polarized Sentinel-1 inhibits the VV+VH bands which are sensitive to soil moisture, woody and herbaceous vegetation. The polanimetric properties of the Synthetic Aperture Radar (SAR) C-band were used to discriminate the following Land cover classes: Acacia forest, Degraded Forest, Degraded-submerged forest, and water. A set of six seasonal corresponding S1 and S2 images (2018-2019) were pre-processed and used in  the classification and hence discrimination of the four land cover classes. Previous studies on the use of cross polarized VV+VH Intensity bands  on vegetation has shown that there is a correlation between vegetation indices derived from optical sensors and the backscatter indices derived from the same Land cover classes.

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