Catalano.Math.Transforms

Class DiscreteCosineTransform

java.lang.Object

Catalano.Math.Transforms.DiscreteCosineTransform

public final class DiscreteCosineTransform
extends java.lang.Object

Discrete Cosine Transform. The cosine transform, like the Fourier Transform, uses sinusoidal basis function. The difference is that the cosine transform basis functions are not complex; they use only cosine functions, and not sine functions.

See Also:

Imaging - Scott E Umbaugh. Chapter 5, p. 220.

Method Summary

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

Parameters:

data - Data.

Forward

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

2-D Forward Discrete Cosine Transform.

Parameters:

data - Data.

Backward

public static void Backward(double[] data)

1-D Backward Discrete Cosine Transform.

Parameters:

data - Data.

Backward

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

2-D Backward Discrete Cosine Transform.

Parameters:

data - Data.