Module imagingbook.spectral
Package imagingbook.spectral.dft
package imagingbook.spectral.dft
1D and 2D implementations of the Discrete Fourier Transform.
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ClassDescriptionInterface to be implemented by all one-dimensional DFT/FFT implementations.Sub-interface for 1D DFT implementations operating on
doubledata.Sub-interface for 1D DFT implementations operating onfloatdata.Direct (slow) implementation of the 1-dimensional DFT using tabulated sine and cosine values.One-dimensional DFT implementation usingdoubledata.One-dimensional DFT implementation usingfloatdata.FFT (fast) implementation of the DFT, based on the JTransforms package by Piotr Wendykier (see https://github.com/wendykierp/JTransforms).One-dimensional FFT implementation usingdoubledata.One-dimensional FFT implementation usingfloatdata.Common interface for all 2D DFT/FFT implementations.Sub-interface for 2D DFT implementations operating ondoubledata.Sub-interface for 2D DFT implementations operating onfloatdata.Direct (slow) implementation of the 2-dimensional DFT using tabulated sine and cosine values.Two-dimensional DFT implementation usingdoubledata.Two-dimensional DFT implementation usingfloatdata.Fast implementation of the 2-dimensional DFT using 1D FFTs.Two-dimensional DFT implementation usingdoubledata.Two-dimensional DFT implementation usingfloatdata.Scaling mode used for the DFT.