A Practical Appearance Model for Dynamic Facial Color
A Practical Appearance Model for Dynamic Facial Color
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DOI：
10.1145/1866158.1866167
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发表时间：
2010-12-01
影响因子：
6.2
通讯作者：
Weyrich, Tim
中科院分区：
文献类型：
--
作者：
Jimenez, Jorge;Scully, Timothy;Weyrich, Tim
面部外观取决于皮肤的生理和生理状态。当人们移动、说话、承受压力和改变表情时，皮肤的外观是不断变化的。这些变化的关键指标之一是肤色。皮肤的颜色是由皮肤内部光线的散射和吸收决定的，主要是由两种发色团——黑色素和血红蛋白的浓度决定的。在本文中，我们提出了一个实时动态外观模型的皮肤建立从体内测量黑色素和血红蛋白浓度。我们演示了我们的方法的有效实现，并表明它对现有的动画和渲染管道增加了微不足道的开销。此外，我们开发了一个现实的，直观的，自动控制肤色，我们称之为皮肤外观钻机。这个钻机可以很容易地与传统的几何面部动画钻机相结合。我们通过增强具有逼真外观变化的数字面部表现来演示我们的方法。
Facial appearance depends on both the physical and physiological state of the skin. As people move, talk, undergo stress, and change expression, skin appearance is in constant flux. One of the key indicators of these changes is the color of skin. Skin color is determined by scattering and absorption of light within the skin layers, caused mostly by concentrations of two chromophores, melanin and hemoglobin. In this paper we present a real-time dynamic appearance model of skin built from in vivo measurements of melanin and hemoglobin concentrations. We demonstrate an efficient implementation of our method, and show that it adds negligible overhead to existing animation and rendering pipelines. Additionally, we develop a realistic, intuitive, and automatic control for skin color, which we term a skin appearance rig. This rig can easily be coupled with a traditional geometric facial animation rig. We demonstrate our method by augmenting digital facial performance with realistic appearance changes.