www.gusucode.com > 声音的处理有：LPC，FFT，共振峰，频谱源码程序 > siganlandsystemusingMatlab/SSUM/library/load_imagedata.m

    function imagedata = load_imagedata(varargin)

	savedir = pwd;
	if nargin == 1,
		filenamepath = varargin{1};
	else
		try 
			cd([ssumroot, 'data/images']);
		catch
			fprintf('Cannot find %s...\n', [ssumroot, 'data/images']);
		end
		% Also be able to select aiff
		[filename,path] = uigetfile({...
			'*.jpg; *.gif; *.tif; *.tiff','Image Files'; ...
			'*.mat','MATLAB data'; '*.*','All files (*.*)'}, ...
			'Select a file');
		if isequal(filename,0) | isequal(path,0)
			return;
		end
		filenamepath = [path filename];
	end

	imagedata = struct('data',[],'map',[],'filenamepath','');
	[t,extension] = strtok(filenamepath,'.');
	switch(lower(extension))
		case '.mat'
			fprintf('Loading database...\n');
			imagedata = load(filenamepath);
			%audiodata = audiodata.database;
		otherwise
			[imagedata.data, imagedata.map] = imread(filenamepath);
	end
	imagedata.filenamepath = filenamepath;

	cd(savedir);