fft_tools Package

fft_tools Package

convolve_nd Module

correlate2d Module

fast_ffts Module

shift Module

zoom Module

scale Module

upsample Module

Fourier upsampling (or interpolation, scaling, zooming) is achieved via DFTs using a dot product rather than the usual fft, as there is (probably?) no way to perform FFTs with a different kernel.

This notebook demonstrates 1-d Fourier upsampling.