%ISTRETCH	Image linear normalization%%	g = istretch(image)%	g = istretch(image, newmax)%%	Return a normalized image in which all pixels lie in the range%	0 to 1, or 0 to newmax.%%%	Copyright (c) Peter Corke, 1999  Machine Vision Toolbox for Matlab% $Header: /home/autom/pic/cvsroot/image-toolbox/istretch.m,v 1.2 2005/10/23 11:17:18 pic Exp $% $Log: istretch.m,v $% Revision 1.2  2005/10/23 11:17:18  pic% Handle multi-dimensional images.%% Revision 1.1.1.1  2002/05/26 10:50:23  pic% initial import%function zs = istretch(z, newmax)	if nargin == 1,		newmax = 1;	end	mn = min(z(:));	mx = max(z(:));	zs = (z-mn)/(mx-mn)*newmax;