SIMULTANEOUS 3D TOPOGRAPHY AND BATHYMETRY ESTIMATION FROM SPACEBORNE VIDEO OPTICAL IMAGERY

Our coasts are the buffer between us and the ocean, it protects us from the ocean elements. Observing the coastal zone is paramount to understand their natural behavior and risks that human coastal settlements are exposed to. While the need seem imminent, coastal observations are relatively rare and if existing is often clustered around high-latitudes or outdated (decades old) due to the expensive and labor-intensive nature of these measurements. Emerging techniques using Earth Observation satellites such as shoreline detections are providing new insights but deliver only a partial, indicative image. For full comprehension, regular measurements of the emerged topography and submerged bathymetry are essential. Here we present ongoing work on the estimation of the coastal topography and bathymetry using spaceborne video imagery.