Home > freetb4matlab > image > fftconv2.m

fftconv2

PURPOSE

% Convolve 2 dimensional signals using the FFT.

SYNOPSIS

function X = fftconv2(varargin)

DESCRIPTION

% -*- texinfo -*-
% @deftypefn {Function File} fftconv2 (@var{a}, @var{b}, @var{shape})
% @deftypefnx{Function File} fftconv2 (@var{v1}, @var{v2}, @var{a}, @var{shape})
% Convolve 2 dimensional signals using the FFT.
%
% This method is faster but less accurate than @var{conv2} for large @var{a} and @var{b}.
% It also uses more memory. A small complex component will be 
% introduced even if both @var{a} and @var{b} are real.
% @seealso{conv2}
% @end deftypefn

CROSS-REFERENCE INFORMATION

This function calls:

fftconv2 % Convolve 2 dimensional signals using the FFT.
impad % Pad (augment) a matrix for application of image processing algorithms.

This function is called by:

fftconv2 % Convolve 2 dimensional signals using the FFT.