qdft2.m

这是支持在MATLAB中进行四元数（哈密顿数）的工具箱

function Y = qdft2(X, A, L)
% QDFT2 Discrete quaternion 2D Fourier transform.
%
% This function computes the two-dimensional discrete quaternion Fourier
% transform of X, which may be a real or complex quaternion matrix.
% A is the transform axis and it may be a real or complex pure quaternion.
% It need not be a unit pure quaternion. L may take the values 'L' or 'R'
% according to whether the hypercomplex exponential is to be multiplied
% on the left or right of X.
%
% This function uses direct evaluation using a matrix product, and it is
% intended mainly for verifying results against fast transform
% implementations such as qfft2.m. See also: iqdft2.m.

% Copyright