Measurement and visualization of the architecture of an adult tree based on a three-dimensional digitising device
Measurement and visualization of the architecture of an adult tree based on a three-dimensional digitising device
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DOI：
10.1007/s004680050084
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发表时间：
1997-04
期刊：
影响因子：
--
通讯作者：
H. Sinoquet;Pierre Rivet
中科院分区：
文献类型：
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作者：
H. Sinoquet;Pierre Rivet
提出了一种测量树木三维结构的方法。该方法工作在芽水平，同时描述了植物的拓扑结构（即。 分枝模式），植物几何形状（即， 树木实体的空间坐标）和枝条形态（即， 枝条和果实的数量，基部直径）。该方法将3D数字化设备（3SPACE FASTRAK，Polhemus）与设计用于数字化仪控制和数据采集管理的软件DiplAmi相结合。可以使用光线追踪软件POV-Ray从数据集重建植物图像。该方法被应用到建筑描述的20年，7米高的核桃树。树木照片和数字化合成的图像之间的视觉比较是令人满意的。信息可以从数据集在整个树和拍摄水平分别说明从拍摄形态分布和叶面积和果实的空间分布。叶面积和果实的空间分布与以前的结果和假设，涉及冠内的光梯度一致。最后，描述的三维树结构的方法进行了讨论，以及该方法的可行性时，适用于这样一个大的树。
A method for the measurement of the three-dimensional (3D) architecture of trees is proposed. The method works at the shoot level and simultaneously describes the plant topology (i. e. branching pattern), the plant geometry (i. e. spatial co-ordinates of the tree entities) and the shoot morphology (i. e. number of shoots and fruits, basal diameter). The method combines a 3D digitising device (3SPACE FASTRAK, Polhemus) associated with software DiplAmi designed for digitiser control and data acquisition management. Plant images may be reconstructed from the data set by using the ray tracing software POV-Ray. The method was applied to the architectural description of a 20-year-old and 7-m-high walnut tree. Visual comparison between a tree photograph and an image synthesised from digitising is satisfactory. Information that can be derived from the data set at both the whole tree and the shoot levels is respectively illustrated from shoot morphology distributions and from spatial distribution of leaf area and fruit. Spatial distributions of leaf area and fruit are in agreement with previous results and hypotheses involving light gradients within the crown. Finally, methods for describing the 3D tree architecture are discussed as well as the feasibility of the method when applied to such a large tree.