地质二维矢量点符号的自动三维建模

发布时间：2018-03-31 18:04

  本文选题：GIS　切入点：三维点符号　出处：《测绘科学》2017年07期

【摘要】：针对传统的三维点符号库实现方法工作量大、扩展性差等问题,提出了直接从二维矢量点符号到三维点符号的自动建模方案。采用三维图元的设计思路,解决符号扩展性差的问题。借鉴二维矢量点符号的表达,来进行三维符号的设计与建模,是对二维符号库的资源再利用,有利于实现二三维符号库的统一。通过设计内存池及内存拷贝的优化策略来提高模型的可视化效率。实验结果表明,提出的方案不仅有较好的可视化效果,并且具有相关文件数据量小、符号的可扩展性好等优势,对三维GIS的符号库研究具有重要的参考价值。
[Abstract]:Aiming at the problems of large workload and poor expansibility of the traditional 3D dot symbol library, an automatic modeling scheme from 2D vector point symbol to 3D point symbol is proposed.The problem of poor extensibility of symbols is solved by using the design idea of three-dimensional graphic elements.The design and modeling of 3D symbols based on the expression of two-dimensional vector point symbols is the reuse of the resources of the two-dimensional symbol library and is conducive to the unification of the two-dimensional and three-dimensional symbol libraries.The optimization strategy of memory pool and memory copy is designed to improve the visualization efficiency of the model.The experimental results show that the proposed scheme not only has good visualization effect, but also has the advantages of small amount of related file data and good scalability of symbols. It has important reference value for the study of 3D GIS symbol library.
【作者单位】： 北京林业大学信息学院;
【基金】：中央高校基本科研业务费专项资金资助项目(TD2014-02)
【分类号】：P208
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本文编号：1691837