org.opentrafficsim.core.egtf

Class Convolution

java.lang.Object

org.opentrafficsim.core.egtf.Convolution

public final class Convolution
extends Object

Utility class for convolution using fast fourier transformation. This utility is specifically tailored to EGTF and not for general fast fourier purposes.

Copyright (c) 2013-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
BSD-style license. See OpenTrafficSim License.

Version:

$Revision$, $LastChangedDate$, by $Author$, initial version 31 okt. 2018

Author:

Alexander Verbraeck, Peter Knoppers, Wouter Schakel

Method Summary

Modifier and Type	Method and Description
static double[][]	convolution(double[][] a, double[][] b) Convolution of two matrices using fast fourier transform.
static void	main(String... args)

Methods inherited from class java.lang.Object

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

Method Detail

main

public static void main(String... args)

convolution

public static double[][] convolution(double[][] a,
                                     double[][] b)

Convolution of two matrices using fast fourier transform.

Parameters:

a - double[][]; the kernel matrix

b - double[][]; the data matrix

Returns:

double[][]; convolution of a over b, same size as b