基于MPEG-4的真实感人脸技术

Realistic Face Techniques Based on MPEG-4

人脸建模与动画是计算机图形学中最富有挑战性的课题之一,可以广泛应用于计算机动画行业、游戏行业、远程会议、代理和化身等许多领域。根据MPEG-4关于人脸特征点的定义,利用一般人脸模型以及特定人的正面和侧面两幅照片,采用Dirichlet自由变形实现了从一般人脸模型到特定人脸模型的变形;再利用特定人的正面和侧面照片,采用纹理融合方法生成了真实感人脸。论文提出的真实感人脸技术具有方法简单、计算速度快、真实感强等优点。

Face modeling and animation is one of the most challenging problems in Computer Graphics.It can be wide-ly used in many application areas,such as computer animation industry,game industry,teleconferencing,and agents and avatars.Following the definition of face feature points by MPEG-4,The authors have made use of a generic face model and the front and side photographs of a specific person to realize the deformation from a generic face model to the specific model,using Dirichlet Free-Form Deformation techniques.By using the front and side photographs again,They have made use of texture blending techniques to generate a realistic face image.The realistic face technique they pro-posed have many advantages,such as simple,fast,highly realistic.