gusucode.com > 《MATLAB图像与视频处理实用案例详解》代码 > 《MATLAB图像与视频处理实用案例详解》代码/第 19 章 基于语音识别的信号灯图像模拟控制技术/voicebox/rotqc2mc.m
function mc=rotqc2mc(qc) %ROTQC2MC converts a matrix of complex quaternion vectors to quaternion matrices % Inputs: % % QC(2m,n) mxn matrix of real quaternion vectors (each 2x1) % % Outputs: % % MC(2m,2n) mxn matrix of real quaternion matrices (each 2x2) % % In matrix form, quaternions can be multiplied and added using normal matrix % arithmetic. Each element of an mxn matrix of quaternions is itself a 2x2 block % so the total dimension of MC is 2m x 2n. % % Copyright (C) Mike Brookes 2000-2006 % Version: $Id: rotqc2mc.m,v 1.3 2007/11/23 18:47:45 dmb Exp $ % % VOICEBOX is a MATLAB toolbox for speech processing. % Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % This program is free software; you can redistribute it and/or modify % it under the terms of the GNU General Public License as published by % the Free Software Foundation; either version 2 of the License, or % (at your option) any later version. % % This program is distributed in the hope that it will be useful, % but WITHOUT ANY WARRANTY; without even the implied warranty of % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the % GNU General Public License for more details. % % You can obtain a copy of the GNU General Public License from % http://www.gnu.org/copyleft/gpl.html or by writing to % Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [m,n]=size(qc); n2=2*n; mc=zeros(m,2*n); mc(:,1:2:n2)=qc; mc(1:2:m,2:2:n2)=-conj(qc(2:2:m,:)); mc(2:2:m,2:2:n2)=conj(qc(1:2:m,:));