基于连续细节层次的地表模型实时绘制算法

研究地表模型的实时绘制，提高绘制速度及可信度。采用点到平均平面的误差度量和基于渐进网格的动态简化方法，使简化可随视点参数而动态变化。

An Algorithm for Real-Time Rendering of Terrain Surface Based on Continuous Level of Detail

To investigate real-time rendering of terrain surface, improve the speed of rendering and the fidelity of simplification, the algorithm taking the distance from vertex to average plane as the error metric and progressive meshes based dynamic simplification was used, which provided view-dependent simplification of the model. The use of triangle strips and quickly culling faces outside the view frustum also contributed to fast rendering of terrain surface. On a P　Ⅱ　300 machine the algorithm achieved a speed of 71ms per frame, and the rendering quality could be accepted. The error metric based on distance from vertex to average plane can produce high fidelity of dynamic simplification, and reduce the complex computation when rendering.