Name
Title | ||
|---|---|---|
Underwater Environment Restitution Through Sonar Images And Swath Bathymetry Rendering |
Abstract | ||
|---|---|---|
Accurately simulating sonar images and swath bathymetry profiles enables to render the reality of the under-water environment. This approach is strongly motivated by the operational constraints for data acquisition. Such a tool is especially attractive for tuning algorithms (i.e. detection and classification ones) according to sensors settings and sea-bottom nature and relief. Therefore, we developped such a simulator relying on acoustical Tay tracing techniques tailored for considering specific underwater propagation properties (multi-path sound propagation, sound velocity profiles, adaptative ray oversampling to modelize acoustic lobe configuration). It aims at rendering data similar to what real sensors provide in a natural contest. In the proposed approach, the virtual environment gathers both static and dynamic behaviours, namely simulator inputs may be a priori known or updated all along time. Sea-ground truth is provided by either a real elevation map or fractal simulation allowing a fine macro-relief description (flat, rocky patch, rippled sea-bottom). In addition, micro-relief a's modelled through sea-bed textures resulting from adequate spatial layouts of ground resolution cells. Sets of natural or manufactured bottom-laying items may be introduced using mesh descriptions (ship wreck,...) or structured geometric primitives (anchors, pipelines ...). Furthermore, the material of the previous inputs tunes their acoustic response. Taking into account carrier trajectory and attitude along time warrants multi-sensor realistic outputs. A great interest of our parallel and modular implementation is an easier incorporation in a more global rendering system. Moreover, its interface proposes real time visualisation of the acquired environment through windows showing current sonar images, swath bathymetry, vehicle attitude and trajectory. Given this flexibility, a promizing 3D sea-bottom and objects reconstruction method takes already benefit of this simulator virtual reality. |
Year | DOI | Venue |
|---|---|---|
1998 | 10.1109/ICSMC.1998.727545 | 1998 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN, AND CYBERNETICS, VOLS 1-5 |
Keywords | Field | DocType |
multi-sensor simulation, sonar images, swath bathymetry, acoustical ray tracing | Computer vision,Computer science,Ray tracing (graphics),Visualization,Geometric primitive,Bathymetry,Sonar,Artificial intelligence,Rendering (computer graphics),Trajectory,Underwater | Conference |
ISSN | Citations | PageRank |
1062-922X | 0 | 0.34 |
References | Authors | |
0 | 3 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Sylvie Daniel | 1 | 11 | 4.01 |
| Didier Gueriot | 2 | 30 | 6.20 |
| eric maillard | 3 | 0 | 0.34 |