Computer generation of eroded valley and mountain terrains

An improved physical erosion model for computer graphics is proposed. Valley and mountain terrains created with this model and based on the erosion of river flow, rainfall, and weathering were observed to be more realistic than fractional Brownian terrains. Earth layer structures such as the Grand Canyon were also formed on the surfaces of the valleys. Further, growing processes of eroded valleys and mountains have been simulated successfully. Terrains with differing surfaces were created easily by adjusting the erosion intensities of rainfall and thermal weathering.