Rapid updating method of local high-precision terrain data in 3D terrain scene
Liu Ha · Computer Engineering and Applications Journal · 2014
In many applications, three dimensional terrain scene has to be updated in local area with high-precision data, in order to build a local high-precision scene. Aiming at the dynamic updating of local terrain data, this paper puts forward a GPU tessellation basedMosaicalgorithm of local high precision terrain. Through the interpolation and subdivision on the terrain grid within the updating area in GPU to increase the number of triangles, as a result, the geometrical accuracy of the local terrain model is improved without increasing the bandwidth of the memory and video memory. The results show that the precision of updating area meets the demand and this algorithm is obviously better than the common method in execution efficiency.