Kevin Ring，Analytical Graphics, Inc. December 2, 2013
1. Massive Terrain Rendering(大批量地形渲染)
2. Cesium Platform
- Javascript,webgl,web workers,typed arrays
- Chrome,firefox,ie11
- Runs on windows,linux,mac os,android.
3. Powder Tracks demo
4. Terrain Rendering(地形渲染)
- Geometry or shape（几何或形状）
-- Heightmap
-- Triangle mesh
- Shading or color（着色）
-- Imagery(aerial photography, color map)
-- Various effects
5. Earth data
- Terrain and imagery collected by satellites and aerial instruments
-- Shuttle Radar Topography Mission (SRTM)
-- National Elevation Dataset (NED)
-- Landsat satellites
-- Digital Globe, SPOT, etc.
- Terrain usually provided as a heightmap
6. Heightmap
7. Unfortunately....不幸的是....
- The best data is hidden:
–Within private networks
–Within classified networks
–Behind pay walls
–By strict terms of use restrictions
- Data is huge – up to hundreds of terabytes
- We can’t access it ahead of time to transform it to a different form.
