13-04.txt

《MATLAB R2007基础教程》 清华大学出版社,包含电子课件,实例原文件,习题答案,都是基于matlab实现

% the example of functions csvread and csvwrite
I_matlab = imread('D:\matlab.bmp');     % read in the image
I_matlab = rgb2gray(I_matlab);          % convert the image to gray image
figure,subplot(1,2,1),imshow(I_matlab); % show the image
csvwrite('D:\matlab.txt',I_matlab);     % write the data into a text file
sub_matlab = csvread('D:\matlab.txt',70,70);% read in part of the data
sub_matlab = uint8(sub_matlab);         % convert the data to uint8
subplot(1,2,2),imshow(sub_matlab);      % show the new image