fast Furier transform

• 傅里叶变换

fast Furier transform的用法和样例：

例句

1. For the microscopy by off-axis lensless Fourier transform holography, Fresnel reconstructing method is better than the convolution method.
   对于离轴无透镜傅里叶变换全息显微来说，菲涅耳近似重建方法优于卷积方法。