colour_edge_detector.m

这是支持在MATLAB中进行四元数（哈密顿数）的工具箱

% Example script to calculate the colour image edge detector described in:
%
% Sangwine, S. J.,
% Colour image edge detector based on quaternion convolution,
% Electronics Letters, 34(10), May 14 1998, 969-971.
% http://dx.doi.org/10.1049/el:19980697
%
% This script is not intended to demonstrate best use of Matlab - the
% intention is to demonstrate some of the features of the QTFM toolbox
% as an example of how the toolbox can be used to program a quaternion
% algorithm at a high level using vectorized coding, and also to show how
% to convert Matlab image arrays to quaternion matrices and vice versa.
%
% The script reads the file lena.tif from the Waterloo Bragzone website at
% http://links.uwaterloo.ca/bragzone.base.html. If access to this is not
% possible, replace the URL in the imread statement below with a suitable
% local filename and path.
%
% Copyright