Study On Forest Landscape Real-time Rendering Based On Technology Of Occlusion Horizon

Forest landscape visualization technology is widely used in landscape design, forest planning and other forest management. In order to improve interactive and real-time of forest scene, we should reduce the workload of rendering as much as possible. Occlusion horizon technology is a occlusion culling algorithm.It reserves the objects which need to render in the whole scene, removes the objects which are no contribution to the rendering results and sends the rendering objects to rendering pipeline.Occulusion horizon technology is used in objects connected with the ground, not observed directly, objects and ground can be regarded as a height scene, such as buildings scene in cities and villages.Based on the characteristics of the forest landscape, the paper regards the forest scene as a plant height, occlusion horizion application of forest scene provide ideas and methods for the further study of forest landscape visualization technology. Porject the current rendering plants to the detected plane to get the maximum height which is saw as occlusion parameter of the plant, and according to occlusion parameter ,we creat a virtual horizon. By using virtual horizon to test the plants in forest scene, we accelerate rendering of forest scene. Experimental results show that the algorithm improves the speed of rendering and enhances the real-time and interactive of scene. Finally, in the paper we forecast the future research work in forest landscape visualization.