Global ocean modeling and rendering techniques based on ellipsoid Rectangular grid mapping
Summary: In recent years, with the development of the virtual reality technology and data acquisition technology, people increase the demand of GIS visualization. Especially accounting for occupying 70 percent of global area, and as a based environmental visualization, global ocean visualization is...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2013-10-01
|
| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-4-W2/33/2013/isprsarchives-XL-4-W2-33-2013.pdf |
| Summary: | Summary: In recent years, with the development of the virtual reality technology and data acquisition technology, people increase the
demand of GIS visualization. Especially accounting for occupying 70 percent of global area, and as a based environmental
visualization, global ocean visualization is particularly important in some applications. This paper studies the global ocean
visualization and modeling techniques under the framework of the WGS84 ellipsoid and achieves a method of rapid global ocean
photorealistic rendering.<br><br>
The main research works are as follow:<br>
1. In the height field modeling, with the law of statistical and spectral marine and Phillip wave spectrum, we can produce a single
height map which considers the wind farm on the ocean wave magnitude of impact;<br>
2. With ellipsoid rectangular grid mapping relationship, the single height map produced above will be mapped to the ellipsoid
repeatedly, and achieve a goal of global ocean height field modeling;<br>
3. With the conversion of screen space coordinate system and the rectangular spatial coordinate system, sampling points can be
acquired by the view-dependent ellipsoid;<br>
4. With the introduction of global bathymetric data, and came through the GPU for rapid sampling, so that we can get sampling
points related to transparency and depth values to achieve a global ocean and land border processing. |
|---|---|
| ISSN: | 1682-1750 2194-9034 |