特定人脸的快速定制和肌肉驱动的表情动画

Quick Customization of Particular Human Face and Muscle-Driven Expression Animation

为解决特定人脸的真实模拟问题提供了一个简单而行之有效的方法 .首先 ,给出特定人脸的正侧面正交图像 ,并提供了一个内嵌肌肉向量的一般人脸三维多边形网格模型 ,采用 Snake技术自动适配人脸特征线 ,基于特定人脸的特征线相对于一般人脸模型上的特征线的位移 ,变分插值一般人脸网格 ,适配特定人脸几何 ;然后 ,用多分辨率样条技术产生无缝的人脸纹理镶嵌图 ,纹理映射后生成高度真实感的能以任意视线方向观察的特定人脸 ;进而 ,通过组合特定人脸的肌肉向量的运动 ,变形模型 ,组合出特定人脸的各种表情 .该方法能在廉价的 PC平台上实现 ,快速、简单 ,而且具有真实感 .

A simple but effective method to simulate particular human face realistically is presented. Provided with frontal and side facial images and a general 3D polygonal facial mesh with muscular vectors, facial feature lines are fitted by Snake automatically. Based on relative displacement between the particular person's feature lines and the general model's, we perform variational interpolation to fit the particular facial geometry. Then, texture mapping is applied to the virtual facial model with facial texture mosaic generated with multiresolution spline. The virtual face can be observed in any direction and can make different expressions by combining different muscular vectors' motion. This method can be realized on PC platform easily and quickly.