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应用生态学报 ›› 1999, Vol. 10 ›› Issue (1): 39-41.

• 研究论文 • 上一篇    下一篇

玉米冠层的数学描述与三维重建研究

郭焱, 李保国   

  1. 中国农业大学资源和环境学院, 北京 100094
  • 收稿日期:1997-03-11 修回日期:1997-04-14 出版日期:1999-01-25 发布日期:1999-01-25
  • 通讯作者: 郭 焱,男,1964年生,博士,副教授,从事土壤2作物系统模拟研究,发表论文18篇.
  • 基金资助:

    国家自然科学基金(49391600)、国家教委跨世纪人才基金和中国科学院计算技术研究所CAD开放实验室基金资助项目.

Mathematical description and three-dimensional reconstruction of maize canopy

Guo Yan, Li Baoguo   

  1. College of Resource and Environment, China Agricultural University, Beijing 100094
  • Received:1997-03-11 Revised:1997-04-14 Online:1999-01-25 Published:1999-01-25

摘要: 采用Lang提出的原理开发了空间坐标仪。利用该仪器测定玉米冠层的空间坐标,以此提出了应用一般二次方程描述玉米叶曲线和叶形的数学方法,方程的系数由最小二乘回归方法得到,其中叶曲线系数由叶片主脉坐标决定,叶形系数由沿叶长方向叶宽测定值决定。从而使应用较少参数描述真实的玉米群体结构成为可能。另外,还实现了玉米冠层的计算机三维重建,为农业生态系统研究提供了新的手段。

关键词: 数学描述, 冠层, 三维重建, 玉米

Abstract: Based on Lang's principle, a spatial coordinate apparatus was constructed to determine the spatial coordinates of maize canopies. According to the determinations, a general quadratic equation was proposed to characterize the curvature and shape of maize leaf, and the coefficients of the equation were determined by least square regression, which makes it possible to describe the true structure of maize colony with a few parameters. In addition, a computer-based three-dimensional reconstruction of maize canopy was realized, which provided a new method for studying agroecological system.

Key words: Mathematical description, Canopy, Three-dimensional reconstruction, Maize