Realistic Real-time Facial Expressions Animation via 3D Morphing Target

Realistic Real-time Facial Expressions Animation via 3D Morphing Target
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通过 3D 变形目标实现逼真的实时面部表情动画

DOI:
10.4304/jsw.8.2.418-425
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发表时间:
2013-01
期刊:
Journal of Software
影响因子:
--
通讯作者:
Lei Zhang
Lei Zhang
中科院分区:
其他
文献类型:
--
作者:
Mengzhao Yang;Kuanquan Wang;Lei Zhang

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逼真的面部动画可以增强3D游戏的沉浸感。本文提出一种基于GPU的3D变形目标方法,用于面部表情实时动画。我们采用纹理映射来获得逼真的外观,并通过修改变形数据结构并在着色器中实现变形算法来设计快速变形过程以实现相对较高的FPS。该算法可实现,分为创建变形目标表情、评估差异向量、初始化变形数据结构、将数据加载到VBO、将属性链接到着色器和渲染面部表情七个步骤。该渲染系统还为我们提供了与数字角色便捷的交互,实现了实际应用中的快速表情转换。实验结果表明,所提出的方法可以产生逼真的实时表情动画。
Realistic facial animation can enhance the immersion characteristic of 3D games. This paper proposes a 3D morphing target method based on GPU for real-time animation of facial expressions. We employ texture mapping to obtain a realistic appearance, and design a fast morphing process to achieve a relatively high FPS by modifying the morph data structure and implementing the morphing algorithm in the shader. The algorithm can be realized and divided into seven steps including creating morph target expressions, evaluating difference vector, initializing morph data structure, loading data into VBO, linking attributes to shader and rendering facial expressions. The rendering system also gives us convenient interaction with the digital character and realizes quick expressions shift for practical application. Experiment results show that the proposed approach yields realistic real-time expressions animation.
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