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Re: [Help-gsl] how to perform 2D convolution of two gsl_matrix

From: Brian Gough
Subject: Re: [Help-gsl] how to perform 2D convolution of two gsl_matrix
Date: Wed, 24 Dec 2008 08:26:43 +0000
User-agent: Wanderlust/2.14.0 (Africa) Emacs/22.2 Mule/5.0 (SAKAKI)

At Fri, 19 Dec 2008 16:30:55 +0545,
Abhishek Dutta wrote:
> I want to perform the 2D convolution of two gsl_matrix (similar to the conv2
> method in matlab). Is there a single method to achieve this? Or should I
> perform the convolution using the following technique
> 1. take fft of these two signals
> 2. multiply the resulting fft
> 3. take inverse fft
> This method would be a good choice as both the matrices (gsl_matrix) have
> same dimensions. Is there any other method to achieve this task?

There is no single routine for it, you have to do the three steps

Brian Gough
(GSL Maintainer)

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