Speedtree-based billboard chartlet shooting method and apparatus

The invention relates to a speedtree-based billboard chartlet shooting method. The method comprises the steps of reserving environment settings of a main drawing process; obtaining parameters of billboards needed to be shot; shooting the billboards of all the surfaces; and drawing specified target graphs corresponding to all the shot billboards on a main texture graph. The invention furthermore relates to a speedtree-based billboard chartlet shooting apparatus. The apparatus comprises an environment setting reservation module, a billboard parameter obtaining module, a billboard shooting moduleand a main graph drawing module. According to the billboards obtained by utilizing the scheme, for perspective trees, geometry drawing can be reduced, so that the drawing efficiency is improved; andunder the condition of overspreading the perspective trees, especially tens of thousands of large-batch plants, a billboard tree can not only better simulate the effect of a 3D tree but also optimizethe drawing. 本发明涉及种基于speedt