【摘要】 研究了三维地质体实体建模对地质勘探数据的要求,结合三维地质体实体建模相关过程和操作,阐述了数据预处理的重要性。提出了数据预处理的数据检查、数据修正和建模辅助3个过程,并对这3个过程中的轮廓线自相交、轮廓线之间相交、任意简单多边形的重心计算算法、三维空间中的辅助标记添加等主要问题和相应解决算法进行了详细论述。实验结果表明,该些方法能够简化建模算法,具有很高的可操作性。更多还原

【Abstract】 The requirements of data for 3D solid modeling of geologic bodies are analyzed.Combining with the process and manipulation of 3D solid modeling of geologic bodies,the importance of data preprocessing is expounded.The data preprocessing are divided into three phases that are data check,data modification and the addition of auxiliary data for modeling,and of which some main problems such as outline intersecting with itself or between the lines,the cg calculation of arbitrary simple polygons and the addition of auxiliary data in three-dimensional space,and corresponding algorithms to solve these problems are discussed detailedly.The experiment results show that the methods can simplify the modeling algorithms and have high maneuverability.更多还原