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首页> 外文会议>2016 IEEE International Conference on Functional-Structural Plant Growth Modeling, Simulation, Visualization and Applications >IMapple — Functional structural model of apple trees
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IMapple — Functional structural model of apple trees

机译：IMapple —苹果树的功能结构模型

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Computer simulation of tree development can provide important insight into real world tree behavior. Numerous models have been developed ranging from simple equations to complicated 3D geometrical models that allow for simulation of acquisition and allocation of carbohydrates. We introduce IMapple (Interactively Modeled Apple), a functional structural apple tree model that builds on the source-sink model of L-peach. Our model integrates accurate biological functionality, as well as high quality visual geometric details. The details are modeled by using subdivision surfaces that allows for fast generation of high precision geometry and direct illumination of leaves is simulated by sampling the sky and the sun trajectory. The main advantage of the IMapple is that allows for an interactive experimentation by the way it manages data. Input data can be provided interactively or by using real-world samples and the model responds immediately. Alternatively, hypothesized data can be input by drawing functional dependencies, for example the resource assimilation rate as a function of light interception can be input by drawing a graph showing the real or assumed relationship. Moreover, our model supports a variety of convenient user interactions, such as branch pruning and flower thinning. We have collected a large data set over the last few years that serves as inputs to our model. IMapple is fast and it allows for interactive or near-interactive simulation of apple trees. For example, a ten years-old tree grown with a time step of one hour can be simulated in under five minutes using a PC. Moreover, our system allows for a simulation of multiple trees and their mutual interaction. We demonstrate the results by simulating growth and fruiting of Golden Delicious apple trees realistically with data collected from a planting at the Purdue Meigs research farm.
机译：树木发育的计算机模拟可以提供对现实世界树木行为的重要见解。已经开发了许多模型，从简单的方程式到复杂的3D几何模型，都可以模拟碳水化合物的采集和分配。我们介绍IMapple（交互式建模苹果），它是一种功能性的结构化苹果树模型，建立在L-peach的源库模型之上。我们的模型整合了准确的生物学功能以及高质量的视觉几何细节。通过使用细分曲面对细节进行建模，该细分曲面可快速生成高精度几何图形，并通过对天空和太阳轨迹进行采样来模拟叶子的直接照明。 IMapple的主要优点是可以通过管理数据的方式进行交互式实验。输入数据可以交互方式提供，也可以通过使用实际示例来提供，并且模型可以立即做出响应。可替代地，可以通过绘制功能依赖性来输入假设的数据，例如可以通过绘制示出真实或假定关系的图表来输入根据光拦截的资源同化率。而且，我们的模型支持各种方便的用户交互，例如分支修剪和花朵稀疏。在过去的几年中，我们已经收集了大量数据，作为我们模型的输入。 IMapple速度很快，它允许交互式或近乎交互式地模拟苹果树。例如，可以使用PC在不到五分钟的时间内模拟以一小时的时间步长生长的十岁树。此外，我们的系统还可以模拟多棵树及其相互之间的相互作用。我们通过从Purdue Meigs研究农场的种植中收集的数据现实地模拟Golden Delicious苹果树的生长和结果，证明了结果。

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