Abstract—In visual navigation system, a method of construction and scheduling of multi-resolution LOD terrain is designed according to the influence of terrain precision on super low flight. First, the tiled pyramid is constituted to manage the terrain data, which is organized by quadtree. The terrain complexity-based node selection criterion is used to select the required blocks for rendering. Then, the structural similarity of quadtree nodes is made use of to symmetrically cluster two-level nodes, which is suitable for batch scheduling of terrain data. Experimental results show that this method improves the terrain precise from a certain range of the aircraft, reduces the frequency of data scheduling, and enhances the rendering frame rates of navigation scene.

Index Terms—Super low-altitude flight, visual navigation, level of detail (LOD), batch scheduling.

Peng Zou and Ronghuan Yu are with the Science and Technology on Complex Electronic System Simulation Laboratory, Equipment Academy, Beijing 101416, China.
Yanshan Bian and Zhike Chen are with the Department of Graduate Management, Equipment Academy, Beijing 101416, China.

Cite:Peng Zou, Yanshan Bian, Zhike Chen, Ronghuan Yu, "Construction and Scheduling of Multi-resolution LOD Terrain in Super Low-Altitude Flight," International Journal of Computer and Electrical Engineering vol. 7, no. 3, pp. 159-167, 2015.