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伍艳莲,曹卫星,汤 亮,朱 艳,刘 慧.基于OpenGL的小麦形态可视化技术[J].农业工程学报,2009,25(1):121-126.DOI:
基于OpenGL的小麦形态可视化技术
投稿时间:2007-11-19  修订日期:2008-10-27
中文关键词:  小麦,可视化,几何建模,渲染,OpenGL
基金项目:国家“863”计划项目(2006AA10Z219,2006AA10Z230);江苏省高技术项目(BG2004320);南京农业大学青年科技创新基金项目(Y200524)
作者单位
伍艳莲 1.南京农业大学/江苏省信息农业高技术研究重点实验室南京 210095 2.南京农业大学信息科技学院南京 210095 
曹卫星 1. 南京农业大学/江苏省信息农业高技术研究重点实验室南京 210095 
汤 亮 1. 南京农业大学/江苏省信息农业高技术研究重点实验室南京 210095 
朱 艳 1.南京农业大学/江苏省信息农业高技术研究重点实验室南京 210095 2.南京农业大学信息科技学院南京 210095 
刘 慧 1. 南京农业大学/江苏省信息农业高技术研究重点实验室南京 210095 
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中文摘要:形态可视化技术是虚拟植物研究的关键技术之一。本研究以小麦作物为对象,在提出小麦形态可视化技术框架的基础上,首先研究了小麦不同器官的三维几何建模技术,构建了基于器官形态特征参数的几何模型,包括叶、茎秆和麦穗几何模型。用NURBS曲面来模拟叶片和叶鞘;用圆柱体模拟茎秆的节间;并采用组合单器官的方式来构建麦穗模型:用圆柱体模拟穗轴,用椭球体和圆柱体分别模拟小穗的谷粒及小穗枝梗。然后,基于OpenGL图形平台,绘制了小麦器官的三维形态,并提出了颜色渲染、纹理映射、光照处理等真实感图形显示技术;最后,通过耦合小麦植株的拓扑结构模型以及小麦个体之间的相互关系,实现了小麦从器官-个体-群体三个层次的形态可视化,从而为构建可视化小麦生长系统奠定了技术基础。
Wu Yanlian,Cao Weixing,Tang Liang,Zhu Yan,Liu Hui.OpenGL-based visual technology for wheat morphology[J].Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE),2009,25(1):121-126.DOI:
OpenGL-based visual technology for wheat morphology
Author NameAffiliation
Wu Yanlian 1. Jiangsu Key Laboratory for Information Agriculture, Nanjing 210095, China
2. College of Information Science and Technology, Nanjing Agricultural University, Nanjing 210095, China 
Cao Weixing 1. Jiangsu Key Laboratory for Information Agriculture, Nanjing 210095, China 
Tang Liang 1. Jiangsu Key Laboratory for Information Agriculture, Nanjing 210095, China 
Zhu Yan 1. Jiangsu Key Laboratory for Information Agriculture, Nanjing 210095, China
2. College of Information Science and Technology, Nanjing Agricultural University, Nanjing 210095, China 
Liu Hui 1. Jiangsu Key Laboratory for Information Agriculture, Nanjing 210095, China 
Key words:wheat, visualization, geometric modeling, rendering, OpenGL
Abstract:Morphology visualization is one of the key technologies for constructing visual plants. Based on the framework of wheat morphology visualization, the 3D geometric modeling technologies of wheat organs were investigated, and the organ geometrical models were developed with characteristic architecture parameters. The model included three submodels: leaf geometry, stem geometry and wheat spike geometry submodels. The NURBS was used to simulate leaf blade and sheath, and stem geometry submodel was developed by a cylinder. The wheat spike geometry submodel was developed by means of assembling a single organ. The spike axis was simulated with a cylinder, and the spikelet was simulated with an ellipsoid and a cylinder. Based on the platform of OpenGL, the 3D morphology of organs was drawn, and the rendering models of color, texture and light were developed. By further integrating the model of topographic structure of wheat plant and the interaction among individual plants, the wheat 3D morphologies at the organ, individual and population levels were visualized on the computer. These results lay a foundation for further development of visual growth system for the wheat plant.
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