Module imagingbook.spectral

Package imagingbook.spectral.dct

Class Dct2dDirect.Double

java.lang.Object

imagingbook.spectral.dct.Dct2dDirect

imagingbook.spectral.dct.Dct2dDirect.Double

All Implemented Interfaces:

Dct2d, Dct2d.Double

Enclosing class:

Dct2dDirect

public static class Dct2dDirect.Double
extends Dct2dDirect
implements Dct2d.Double

Two-dimensional DCT implementation using double data.

Nested Class Summary

Nested classes/interfaces inherited from class imagingbook.spectral.dct.Dct2dDirect

Dct2dDirect.Double, Dct2dDirect.Float

Nested classes/interfaces inherited from interface imagingbook.spectral.dct.Dct2d

Dct2d.Double, Dct2d.Float

Constructor Summary

Constructors

Constructor	Description
Double(int width, int height)	Constructor.

Method Summary

Modifier and Type	Method	Description
Dct1d.Double	get1dDct(int size)	Returns a suitable 1D DCT of the specified size (double).
int	getHeight()	Returns the 'height' of the 2D data array (length of dimension 1).
int	getWidth()	Returns the 'width' of the 2D data array (length of dimension 0).

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.Dct2d

getHeight, getWidth

Methods inherited from interface imagingbook.spectral.dct.Dct2d.Double

checkSize, extractCol, extractRow, forward, insertCol, insertRow, inverse, transform

Constructor Details

Double

public Double(int width,
 int height)

Constructor.

Parameters:

width - width of the data array (dimension 0)

height - height of the data array (dimension 1)

Method Details

get1dDct

public Dct1d.Double get1dDct(int size)

Description copied from interface: Dct2d.Double

Returns a suitable 1D DCT of the specified size (double).

Specified by:

get1dDct in interface Dct2d.Double

Parameters:

size - the size of the DCT

Returns:

a Dct1d.Double instance

getWidth

public int getWidth()

Description copied from interface: Dct2d

Returns the 'width' of the 2D data array (length of dimension 0). Data arrays are indexed as data[x][y], with 0 ≤ x < width and 0 ≤ y < height.

Specified by:

getWidth in interface Dct2d

Returns:

the width of the 2D data array

getHeight

public int getHeight()

Description copied from interface: Dct2d

Returns the 'height' of the 2D data array (length of dimension 1). Data arrays are indexed as data[x][y], with 0 ≤ x < width and 0 ≤ y < height.

Specified by:

getHeight in interface Dct2d

Returns:

the height of the 2D data array