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。

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Rep. Anthony Weiner, D-New York, issued a statement earlier this week in which he called for the prosecution of PCA executives.

CNN: Peanut company officials spurn Congress' questions