多波束海底地形三维虚拟仿真研究

基于多波束探测获得的高精度海底地形数据,通过对水下地形进行设色纹理渲染生成地形和纹理数据集,以三维建模软件Multigen Creator和Terra Vista为主要工具,采用细节层次LOD(Levels of Detail)技术和虚拟纹理映射技术,建立起视景仿真领域通用的OpenFlight数据格式的三维地形数据库模型。利用交互式三维可视化分析软件Vega Prime可以真实直观地反映海底地形环境,实现了海底地形的三维可视化与漫游,可以更直观地表现和解译水下地形数据。虚拟现实技术为海洋测量数据的三维可视化展示方面提供了新的技术途径,在水下目标分析、航行保障和水下AUV、ROV安全保障中具有良好的应用前景。

Research on 3D Visualization of Multi-Beam Seabed Terrain

Based on high-precision seabed topographic data obtained by multi-beam survey, a terrain and texture dataset is generated by color setting and texture rendering of the underwater terrain. By using 3D modeling software Multigen Creator and Terra Vista and applying LOD (Levels of Detail) technique and virtual texture mapping technology, a three-dimensional terrain database model with the OpenFlight data format commonly used in the field of visual simulation is established. The seabed terrain environment can be reflected truly and intuitively by using the interactive 3D visualization analysis software Vega Prime. Thus, the 3D visualization and roaming of the seabed terrain can be realized and the underwater topographic data can be interpreted and expressed more intuitively. The virtual reality technology provides a new technical approach for 3D visualization display of marine survey data, which has a good application prospect in the aspects of underwater target analysis, navigation support and underwater AUV and ROV security.