Fusion Algorithm of Road and Terrain Based on CUDA

Introducing three-dimensional visualization technology into the design process of expressway can greatly improve the design efficiency and help optimizing the design effect.This process involves a lot of time-consuming calculation;the main of which is the fusion algorithm of road and terrain.Due to the limitation of hardware and software in traditional calculating process,the calculating speed has been restricted a lot.With the help of the latest development of GPU technology,this paper applies CUDA programming technique based on GPU hardware into the fusion algorithm of road and terrain.By transforming the traditional algorithm into parallel algorithm which is suitable for running on GPU,the fusion speed of drawings has been greatlly improved,and user's waiting time shortened and thus user's experience improved.Through the comparision of different fusion algorithms,the result shows that the fusion algorithm of road and terrain based on CUDA greatly improved the fusion speed on the premise of ensuring correct result.