中文摘要：

改变了三维地形图中以纹理贴图的形式表达碎石区域的常见方法,充分考虑光照视觉效果和重力作用的影响等诸多因素,提出了一套符合人们空间认知习惯的碎石模型自动建立方法,能较好地对碎石区域内不同光照条件、不同高程处的碎石分布特征及个体形态进行逼真模拟,有助于其他类似地貌符号模型的自动建立。

英文摘要：

To improve the common representation method of scree areas by pasting texture in 3D topographic map,we present an automatic modeling method of scree based on fully considering many impact factors such as visual effect of illumination,gravity effect,etc.The method accords with the people＇s spatial cognition custom.The results show that it could be better to simulate the distributive characteristics and the individual appearance of scree under the different illumination conditions and elevation conditions in scree ares.This study will be helpful to build the modeling of other similar relief symbols automatically.