Module imagingbook.spectral

Package imagingbook.spectral.dct

Class Dct1dDirect.Double

java.lang.Object

imagingbook.spectral.dct.Dct1dDirect

imagingbook.spectral.dct.Dct1dDirect.Double

All Implemented Interfaces:

Dct1d, Dct1d.Double

Enclosing class:

Dct1dDirect

public static class Dct1dDirect.Double
extends Dct1dDirect
implements Dct1d.Double

One-dimensional DCT implementation using double data.

Nested Class Summary

Nested classes/interfaces inherited from class imagingbook.spectral.dct.Dct1dDirect

Dct1dDirect.Double, Dct1dDirect.Float

Nested classes/interfaces inherited from interface imagingbook.spectral.dct.Dct1d

Dct1d.Double, Dct1d.Float

Constructor Summary

Constructors

Constructor	Description
Double(int M)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	forward(double[] g)	Performs an "in-place" 1D DCT forward transformation on the supplied data.
int	getSize()	Returns the size of this DCT (length of data vectors).
void	inverse(double[] G)	Performs an "in-place" 1D DCT inverse transformation on the supplied spectrum.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface imagingbook.spectral.dct.Dct1d

getSize

Methods inherited from interface imagingbook.spectral.dct.Dct1d.Double

checkSize

Constructor Details

Double

public Double(int M)

Constructor.

Parameters:

M - the data size

Method Details

forward

public void forward(double[] g)

Description copied from interface: Dct1d.Double

Performs an "in-place" 1D DCT forward transformation on the supplied data. The input signal is replaced by the associated DFT spectrum.

Specified by:

forward in interface Dct1d.Double

Parameters:

g - the signal to be transformed (modified)

inverse

public void inverse(double[] G)

Description copied from interface: Dct1d.Double

Performs an "in-place" 1D DCT inverse transformation on the supplied spectrum. The input spectrum is replaced by the associated signal.

Specified by:

inverse in interface Dct1d.Double

Parameters:

G - the spectrum to be transformed (modified)

getSize

public int getSize()

Description copied from interface: Dct1d

Returns the size of this DCT (length of data vectors).

Specified by:

getSize in interface Dct1d

Returns:

the size of this DCT