Module imagingbook.spectral

Package imagingbook.spectral.dct

package imagingbook.spectral.dct

1D and 2D implementations of the Discrete Cosine Transform.

Class	Description
Dct1d	Interface specifying all one-dimensional DCT implementations.
Dct1d.Double	Sub-interface for 1D DCT implementations operating on double data.
Dct1d.Float	Sub-interface for 1D DCT implementations operating on float data.
Dct1dDirect	Calculates the 1D DFT using tabulated cosine values for float or double data (see sub-classes Dct1dDirect.Float and Dct1dDirect.Double, respectively).
Dct1dDirect.Double	One-dimensional DCT implementation using double data.
Dct1dDirect.Float	One-dimensional DCT implementation using float data.
Dct1dFast	This is fast implementation of the DCT, based on the JTransforms package by Piotr Wendykier ( https://github.com/wendykierp/JTransforms).
Dct1dFast.Double	One-dimensional DCT implementation using double data.
Dct1dFast.Float	One-dimensional DCT implementation using float data.
Dct1dSlow	Calculates the 1D discrete cosine transform (DFT) on double data.
Dct2d	Common interface for all 2D DCT implementations.
Dct2d.Double	Sub-interface for 2D DCT implementations operating on double data.
Dct2d.Float	Sub-interface for 2D DCT implementations operating on float data.
Dct2dDirect	Direct (slow) implementation of the 2-dimensional DCT using tabulated cosine values.
Dct2dDirect.Double	Two-dimensional DCT implementation using double data.
Dct2dDirect.Float	Two-dimensional DCT implementation using float data.
Dct2dFast	Fast implementation of the 2-dimensional DCT.
Dct2dFast.Double	Two-dimensional DCT implementation using double data.
Dct2dFast.Float	Two-dimensional DCT implementation using float data.