Multi-resolution quad-tree based algorithm for real- time visualization of massive terrain dataset

Three-dimensional terrain visualization is an important issue of the virtual battlefield. The rendering fidelity is very low because of the impact of the terrain property information in a specific application environment. The quad-tree of multi-resolution was designed to organize the terrain data. The effect of terrain feature was imported to reconstruct node evaluation function, which can make the quad-tree visualization suitable for more application situations. It can ensure the lowest distortion of the terrain feature in an application situation. The method to eliminate cracks based on index template boundary algorithm was presented. It realizes the seamless transition during the rendering process for a large amount of data mesh. The experimental results show this algorithm improves the roaming efficiency and the visualization effects for the large-scale terrain rendering.