【SIGGRAPH Asia 2012专题*技术论文】形状和树木：捕捉和动画形态建成的多边形树模型

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【SIGGRAPH Asia 2012专题*技术论文】
形状和树木：捕捉和动画形态建成的多边形树模型
Capturing and Animating the Morphogenesis of Polygonal Tree Models
Sören Pirk, Till Niese, Oliver Deussen, Boris Neubert 摘要：鉴于一个静态树模型，我们提出了一种方法来计算发展阶段。对树的自然生长的树模型进行分析，并确定其骨架基于图的描述。基于结构上的相似性，树枝修剪已申请或分行，time.Botanic增长模式和异速生长规则使我们产生令人信服的动画，从一个年轻的树，收敛到给定的模型添加。此外，用户可以探索所有中间步骤，即使是复杂的模型也可以容易地进行编辑的树份。这种形式的逆向工程，从少量的静态树模型，使用户能够创建丰富的自然景观。Abstract：Given a static tree model we present a method to compute developmental stages that approximate the tree’s natural growth. The tree model is analyzed and a graph-based description its skeleton is determined. Based on s***ctural similarity, branches are added where ***ning has been applied or branches have died off over time.Botanic growth models and allometric&nbsp***les enable us to produce convincing animations from a young tree that converge to the given model. Furthermore, the user can explore all intermediate stages.By selectively applying the process to parts of the tree even complex models can be edited easily. This form of reverse engineering enables users to create rich natural scenes from a small number of static tree models.
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