matlab 图像二进制化并保存为ASCII文件

image_ascii.m

IMG = imread('xxx.jpg');  % image data
L = im2bw(IMG); % image data to logical data
I = int8(L); % convert to 8 bit integer
dlmwrite('data.dat', I, ' ') % write ascii file, using space(' ') as delimeter
% open data.dat to view it

I = fliplr(I);
or
I = flipud(I);
or
I = rot90(I);