Catalano.Math.Transforms

Class DiscreteSineTransform

java.lang.Object

Catalano.Math.Transforms.DiscreteSineTransform

public class DiscreteSineTransform
extends java.lang.Object

Discrete Sine Transform. The sine transform (DST) is a Fourier-related transform similar to the discrete Fourier transform (DFT), but using a purely real matrix. Unlike the other sinusoidal transforms, the DST is most conveniently computed for N = 2^p - 1, where p is an integer. DSTs are widely employed in solving partial differential equations by spectral methods, where the different variants of the DST correspond to slightly different odd/even boundary conditions at the two ends of the array.

See Also:

Image Processing - Kenneth R. Castleman - Chapter 13 - p.288

Method Summary

Modifier and Type	Method and Description
static void	Backward(double[] data) 1-D Backward Discrete Sine Transform.
static void	Backward(double[][] data) 2-D Backward Discrete Sine Transform.
static void	Forward(double[] data) 1-D Forward Discrete Sine Transform.
static void	Forward(double[][] data) 2-D Forward Discrete Sine Transform.

Methods inherited from class java.lang.Object

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

Method Detail

Forward

public static void Forward(double[] data)

1-D Forward Discrete Sine Transform.

Parameters:

data - Data.

Backward

public static void Backward(double[] data)

1-D Backward Discrete Sine Transform.

Parameters:

data - Data.

Forward

public static void Forward(double[][] data)

2-D Forward Discrete Sine Transform.

Parameters:

data - Data.

Backward

public static void Backward(double[][] data)

2-D Backward Discrete Sine Transform.

Parameters:

data - Data.