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首页> 外文期刊>Berichte des Meteorologischen Institutes der Universitat Freiburg >Digital video tracking imagery of tree movements in responseto gusting airflow conditions
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Digital video tracking imagery of tree movements in responseto gusting airflow conditions

机译：响应重影气流条件的三个动作的数字视频跟踪图像

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摘要

In order to trace the movements of trees over time and as they interact with gusting wind in acomplex terrain, illustrations are produced using a 3-D tracking program. The animation of spe-cific tree behavior will be based on digital information chosen from within field-gathered foot-age to show the paths of foliage, branch and tree movement. The biomechanical response ofleaves, branches, limbs, canopy, and/or trunk displacement can be captured, and a story told ofthe effects of gusting wind conditions upon a single tree, and further, over the forest and/oracross edge terrain. By choosing tracking points, as features, on trees from the entire framedlandscape, the response of an individual tree in the foreground can be seen within the context ofthe surrounding canopy. The trailing imagery can illustrate specific wind loading strategies andshow range of movement from crown to lower branches. Wind speed data are recorded in thefield during filming and are provided for each digitally annotated, video-captured event. Gustexcitation and sway response, as well as the characteristic movements of distinct elements, canbe individually expressed in this process using the vocabulary of art.
机译：为了跟踪树木随时间推移的运动以及它们在复杂地形中与阵风相互作用的过程，使用3-D跟踪程序制作了插图。特定树的行为的动画将基于从田间采集的脚步中选择的数字信息，以显示树叶，树枝和树木运动的路径。可以捕获叶子，树枝，四肢，树冠和/或树干移位的生物力学响应，并且讲述了阵风条件对单棵树以及森林和/或整个边缘地形的影响。通过从整个框架景观中选择树上的跟踪点作为特征，可以在周围树冠的背景下看到前景中单个树的响应。尾随的图像可以说明特定的风荷载策略，并显示从树冠到下部树枝的运动范围。拍摄过程中将风速数据记录在现场，并为每个数字注释的视频捕获事件提供风速数据。在此过程中，可以使用艺术词汇来分别表达手法和摇摆响应以及不同元素的典型运动。

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