the spherical harmonics model

基本解释

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PCA技术建立了一个3-D人脸模型。
According as the expanding of spherical harmonics of the gravitational potential, the radial correction formula and the estimating error model are given.
依据地球引力位球谐展开，推导了重力梯度张量的径向归算改正公式，并给出改正误差估算模型。
The two components have identical vertical structure and physical process. The global spectral model component uses spherical harmonics as horizontal basis functions.
这两部分采用相同的垂直结构和物理过程，都用球谐函数作为水平基本函数。