alex_overview.hlp

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

ALEX Overview

	ALEX is an attempt to build an image processor for Scanning Force 
	Microscopy images. It is written in the MATLAB envoriment (Mathworks), 
	thus is a collection of .m files. ALEX requires MATLAB 4.2c to be run. 
	The image processing toolbox (by Mathworks) is also required. The 
	program was built and tested on an SGI machine but only a few
	changes will be required to adapt it to others Unix platforms.

	The basic idea was to build a user friendly interface to display SFM 
	images with the capability of modifing and trasforming the image by 
	means of custom-made functions. Using the versatility of Matlab, the 
	functions can also be written in C and Fortran and compiled using the 
	MATLAB compilers cmex and fmex. External programs can be called using 
	the 'unix' command. To be able to work on an image, only a few concepts 
	of the structure of ALEX, plus a basic knowledge of MATLAB, are needed.

	ALEX was written to assist the Nanoscope III software (Digital 
	Instruments). It reads and writes the Nanoscope III file format. 
	Images can also be imported from and exported to several formats (TIFF, 
	GIF, PCX, MATLAB, ASCII, SPIDER).
	For the version 4 of the Nanoscope software it translates any kind
	of image data.
	For the version 3 of the same software the data translation
	is limited only to 'Image data=Heigth' or 'Deflection'. Other
	kinds of image data are converted to gray scale. To upgrade
	Alex to any other image data make the appropriate changes
	in the functions: ind2heigth.m and heigth2ind.m