readmatlab.m

matlab处理图像的一些基本方法。其中有一部分mex程序需要安装编译

function [img, header, errmsg]=readMATLAB(fname)
%READMATLAB Import a Matlab image file.
%
%	[I,H]=READMATLAB(FNAME)
%
%	I is the image
%	H if the header
%	FNAME is the file name
%
%	The Matlab file must contein a matrix named I (image)
%	and the vector H (header). If H is not present one is
%	built.
%
%	Claudio 13 Oct. 1995 (Friday)

%
% Copyright (c) 1995 by Claudio Rivetti and Mark Young
% [e-mail],    [e-mail]
%


errmsg = '';
HEADER_SIZE=2048;

if exist(fname) ~= 2
  errmsg='File not found';
  return;
end

eval(['load ' fname]);

if exist('I') ~= 1
  errmsg='Wrong file format';
  return;
end

m=max(size(I,1),size(I,2));
img=zeros(m,m);
img(1:size(I,1), 1:size(I,2))=I;
clear I;

if exist('H') ~= 1
	img=img-min(min(img));
	img=(img/max(max(img)))*32000;
	header=zeros(1,HEADER_SIZE);
	header(1)=26;
	header=setparameter(header, '*ALEX Header', '');
	header=setparameter(header, 'File Type', 'MATLAB');
	d=date;p=find(date=='-');
	D=[time ' XX xxx ' d(p(1)+1:p(2)-1) ' ' d(1:p(1)-1) ' 19' d(p(2)+1:p(2)+2)];
	header=setparameter(header, 'Date', D);
	header=setparameter(header, 'Data length', HEADER_SIZE);
	header=setparameter(header, 'Samps/line', size(img));
	header=setparameter(header, 'Serial number', ' ');
	header=setparameter(header, 'Id', 'MATLAB');
	header=setparameter(header, 'X offset', '0 pixels');
	header=setparameter(header, 'Y offset', '0 pixels');
	header=setparameter(header, 'Scan size', [num2str(size(img,1)) ' pixels']);
	header=setparameter(header, 'Trasform. Factor', 1/32000);
	header=setparameter(header, 'Note', 'Image from MATLAB file');
end

return