A 3-d face model is constructed by the imaging theory and spherical harmonics, combining with the principle of 3-d projection and PCA.
根据3 -D数据的优势，利用图像成像原理和球面调和函数理论，结合3 - D投影原理和PC A技术建立了一个3 - D人脸模型。
A nonlinear elastoplastic model is applied to simulate the full face 3-d excavation process of a shallow tunnel embedded in layered soil.
文章应用非线性弹塑性模型，对层状土地层中浅埋隧道全断面开挖过程进行了三维有限元分析。
The other is simplified crack model, which is used to describe the traverse crack, estimate approximately the free face farther field effect and match with the 1-D fixed shape wave.
其二描述直管的横向裂缝，建立了估算裂缝自由面远场效应、并与一维定型波模型匹配的简化裂缝模型。
Objective: to build 3-d digital face model of unilateral orbital defect and find a new method to get 3-d data of facial defects.
目的：建立活体单侧眼眶部缺损的面部三维数字化模型，探讨颜面部缺损三维数据快速精确采集的新方法。
The traditional 3-d reconstruction method using a face physiology model requires very complex computations, therefore, a sample-based method was developed to synthesize realistic facial expressions.
传统的三维模型加生理模型的方法可以生成真实的人脸表情图像，但是其中的计算复杂度很高。
The traditional 3-d reconstruction method using a face physiology model requires very complex computations, therefore, a sample-based method was developed to synthesize realistic facial expressions.
传统的三维模型加生理模型的方法可以生成真实的人脸表情图像，但是其中的计算复杂度很高。
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