Terrain Visualization Based on Viewpoint Movement

Abstract

In real-time rendering of large-scale terrain, often using frame coherence to optimize terrain visualization algorithm, to reduce the amount of calculation of each frame, to improve the efficiency of the algorithm. But using frame coherence optimization algorithm has a premise, it is between two consecutive frames, the viewpoint movement is small. Therefore, you can make use of the changes between the two frames, only modify the part of the display node can get the next frame to display the terrain node. However, in practical applications, however, there is a large difference between the two consecutive frames, which is caused by the discontinuity of the viewpoint and the fast movement speed. In this paper, it is considering the viewpoint of jumping movement, using the threshold of viewpoint movement to optimize the terrain visualization algorithm. To improve the effectiveness and generality of terrain visualization algorithm based on frame coherence. The experimental results show that the use of threshold of viewpoint movement revised visualization algorithm, can effectively reduce the amount of calculation per frame, to enhance the efficiency of the algorithm.