热带海洋学报 ›› 2013, Vol. 32 ›› Issue (4): 92-96.doi: 10.11978/j.issn.1009-5470.2013.04.014cstr: 32234.14.j.issn.1009-5470.2013.04.014

• 海洋测绘学 • 上一篇    下一篇

改进Delaunay三角网格等值线提取方法

陈宏文, 曾繁彩, 王刚龙, 梁建   

  1. 广州海洋地质调查局, 广东 广州 510760
  • 收稿日期:2011-10-28 修回日期:2011-12-06 出版日期:2013-10-20 发布日期:2013-10-30
  • 作者简介:陈宏文(1969—), 男, 广东省汕头市人, 高级工程师, 主要研究领域为海洋地质、地球物理勘查。E-mail: chenhw@hydz.cn
  • 基金资助:
    国家“

An improved contour plotting method based on Delaunay Triangulation Network

CHEN Hong-wen, ZENG Fan-cai, WANG Gang-long, LIANG Jian   

  1. Guangzhou Marine Geological Survey, Guangzhou 510760, China
  • Received:2011-10-28 Revised:2011-12-06 Online:2013-10-20 Published:2013-10-30

摘要: 传统的基于Delaunay三角网格等值线提取方法采用线性内插, 对于研究区域变量时, 误差较大。提出了采用等值点非线性计算和三角形重心内插等方法, 对传统的基于Delaunay三角网格等值线提取方法进行改进, 显著提高了对区域变量拟合精度, 并在广东海岸带降雨量数据中对该方法的实用性进行了验证。

关键词: 等值线, 网格化插值, Delaunay三角网格, 非线形插值

Abstract: Traditional contour plotting method may have big errors in studying regional variables, due to linear interpolation. In this study, we use nonlinear interpolation and triangle mass point interpolation methods, which can greatly improve the fitting precision over the traditional contour plotting method. The new contour plotting method is validated using marine geological survey data, and the verifying result is satisfied.

Key words: contour, grid interpolation, Delaunay Triangulation Network, nonlinear interpolation

中图分类号: 

  • TP391.41