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Animating streamlines with orthogonal advancing waves

机译:用正交行波动画化流线

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Self-animating image of flow through repeated asymmetric patterns (RAPs) is an innovative approach for creating illusory motion using a single image. In this paper, we present a smooth cyclic variable-speed RAP animation model that emulates orthogonal advancing waves from a geometry-based flow representation. It enables dense, accurate visualization of complex real-world flows using animated streamlines of an elegant placement coupled with visually appealing orthogonal advancing waves. The animation model first performs velocity (magnitude) integral luminance transition on individual streamlines. Then, inter-streamline synchronization in luminance varying along the tangential direction is imposed. Next, tangential flow streaks are constructed using evenly spaced hue differing in the orthogonal direction. In addition, an energy-decreasing strategy is proposed that adopts an iterative yet efficient procedure for determining the luminance phase and hue of each streamline in HSL (hue, saturation, and lightness or brightness) color space. To increase the contrast between flow streaks, adaptive luminance interleaving in the direction perpendicular to the flow is further applied. We demonstrate the effectiveness of the animation model using some synthetic and real flows.
机译:通过重复不对称图案(RAP)进行的流的自动画图像是一种创新的方法,可以使用单个图像创建幻觉运动。在本文中,我们提出了一个平滑的循环变速RAP动画模型,该模型可以模拟基于几何的流表示形式的正交前进波。它使用优雅的布局的动画流线以及视觉上吸引人的正交行波,可以对复杂的现实世界流进行密集,准确的可视化。动画模型首先在各个流线上执行速度(幅度)积分亮度转换。然后,施加沿切线方向变化的亮度中的流线间同步。接下来,使用在正交方向上不同的均匀间隔的色相来构造切向流条纹。另外,提出了一种能量减少策略,该策略采用迭代而有效的过程来确定HSL(色相,饱和度以及明度或亮度)颜色空间中每个流线的亮度相位和色调。为了增加流条纹之间的对比度,进一步应用了在垂直于流的方向上的自适应亮度交织。我们使用一些合成流程和实际流程演示了动画模型的有效性。

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