Multi-resolution Global Terrain Rendering Based on Projected Grid
Lai Kang, Lingda Wu, Hanchen Song, Yang Bing · Jisuanji gongcheng · 2009
The paper proposes a multi-resolution global terrain rendering method based on projected grids. Using projected grids to subdivide the spherical surface enables fast asymmetric griding of the part which is visible. To improve the efficiency of data loading and updating, the terrain data is hierarchical organized and stored in tiles, and visible region is calculated beforehand. Rendering frame rate is steady because the amount of grids is settled. The experimental results show that the proposed method is ineffective on global 3D terrain real-time rendering, and it can generate visually convincing results with inexpensive computation.