Visualisation homogène du littoral à partir de données géographiques hétérogènes spatio-temporelles

The coastal area is a multi-issue area that promote the production of new data to improve its characterization, including LiDAR surveys (Light Detection and Ranging) for the generation of Digital Terrain Model (DTM) with high spatial resolution. Challenges are located on the integration and the rendering of these data, because of their heterogeneity (images and vectors), but also because current visualization systems do not allow a continuous rendering of land and sea with tide consideration. We propose to improve the visualization of the littoral area by representing more realistically water level dynamics: (1) with the use of more precise data such as LiDAR, to visualize more precisely coastal elements and thus enhance the perceived realism and (2) by manipulating the realism with image photorealism and expressive rendering technics. Finally, we propose several rendering methods to visualize these data on two applications of hybrid visualization: LiDAR/map and Lidar/ortho-image. MOTS-CLES : visualisation, realisme, maree, lidar, stylisation