BendyLights: Artistic Control of Direct Illumination by Curving Light Rays
BendyLights: Artistic Control of Direct Illumination by Curving Light Rays
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BendyLights：通过弯曲光线对直接照明进行艺术控制
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Jonathan D. Denning
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文献类型：
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作者：
W. B. Kerr;F. Pellacini;Jonathan D. Denning
在计算机电影摄影中，艺术家通常使用非物理照明模型来实现所需的外观。本文介绍了BendyLights，一种非物理光照模型，光线沿沿着样条线非线性传播，允许艺术家独立控制场景中不同点的光线方向和阴影位置。由于光线变形在所有世界空间位置上都是平滑定义的，因此产生的非物理照明效果在空间上保持一致，避免了许多非物理模型的频繁不一致。BendyLights的控制很简单，只需使用熟悉的界面重塑样条曲线，并且只需要很少的参数。BendyLight控制点可以设置关键帧以支持动画照明效果。我们展示了BendyLights在实时渲染系统中进行编辑和生产渲染器进行最终渲染，我们表明BendyLights也可以用于全局照明。
In computer cinematography, artists routinely use non‐physical lighting models to achieve desired appearances. This paper presents BendyLights, a non‐physical lighting model where light travels nonlinearly along splines, allowing artists to control light direction and shadow position at different points in the scene independently. Since the light deformation is smoothly defined at all world‐space positions, the resulting non‐physical lighting effects remain spatially consistent, avoiding the frequent incongruences of many non‐physical models. BendyLights are controlled simply by reshaping splines, using familiar interfaces, and require very few parameters. BendyLight control points can be keyframed to support animated lighting effects. We demonstrate BendyLights both in a realtime rendering system for editing and a production renderer for final rendering, where we show that BendyLights can also be used with global illumination.