首先对人脸图像进行傅里叶变换，得到其具有位移不变特性的振幅谱表征。

First, face images are processed by a 2D Fourier transform that has some effective properties such as a linear transform, and is invariant against spatial translation.

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首先对人脸图像进行傅里叶变换，得到其具有位移不变特性的振幅谱表征。

First, face images are processed by a 2D Fourier transform that has some effective properties such as a linear transform, and is invariant against spatial translation.

youdao