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/peak2dquad.m
function [v,xy,t,m]=peak2dquad(z) %PEAK2DQUAD find quadratically-interpolated peak in a 2D array % % Note: This routine has been superceeded by quadpeak % % Inputs: Z(m,n) is the input array % % Outputs: V is the peak value % XY(2,1) is the position of the peak (in fractional subscript values) % T is -1, 0, +1 for maximum, saddle point or minimum % M defines the fitted quadratic: z = [x y 1]*M*[x y 1]' % Copyright (C) Mike Brookes 2008 % Version: $Id: peak2dquad.m,v 1.2 2010/10/28 10:40:57 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. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [v,xy,t,m]=quadpeak(z);