【摘要】 为了实现对玉米形态结构的定量化和可视化描述,提出了基于生长模型的玉米形态模拟及三维可视化的技术框架。通过资料收集和田间观测研究,构建了可描述不同玉米品种叶片、叶鞘和节间等器官的主要形态结构参数随叶序变化的形态知识模型。在玉米生长模型框架内,整合玉米形态知识模型和基于形态特征参数的器官几何模型,使玉米生长模型可输出玉米拓扑结构和各器官的形态特征参数,实现了对玉米形态建成过程的定量化模拟,并进一步驱动几何模型进行玉米植株和冠层的三维重建。根据上述“生长模型-形态模型-数学模型-显示模型”的思路,模拟了玉米“农大108”的三维形态建成过程及冠层的三维形态,具有较强的真实感,为玉米形态结构研究提供了新的思路和手段。更多还原

【Abstract】 To realize quantitive and visual description of morphological structure of maize,a technique frame for simulation and threedimensional visualization of maize morphological structure was provided based on maize growth models.Through literature review and field observation,morphological knowledge models for description of the relationship between the number of leaves and main morphological structural parameters of leaf,sheath,and internodes were constructed.Within the frame of maize growth models,maize morphological knowledge models and organ geometrical models based on morphological characteristic parameters were integrated,quantative simulation of maize morphologic development process and output of characteristic parameters of maize topological structure and organ morphology were realized in maize growth modeling.Three dimensional shape of maize plants and canopy was then reconstructed based on geometrical models using outputted morphological characteristic parameters.By combination of growth models,morphological structure models,mathematic models and visualization models,three-dimensional process of canopy and morphological development of the maize cultivar NONGDA108 was simulated with high sense of reality.更多还原