What is code to convert an RGB image to binary image , and then save that image in form of matrix in notepad? one more question: code to convert binary matrix in notepad to Binary image format? Please reply fast

The following would be one of the alternatives to 's answer for saving the image, otherwise his method works well too. The resulting answer is logical, but has a double value which is the reason for the formatting in the text file. Writing a logical value into a text in ASCII format is not supported (http://www.mathworks.com/help/matlab/ref/save.html) . You can type the following in MATLAB: %Read the image im = imread('peppers.png'); %Conversion im = double(im2bw(im)); %Write to file save('peppers.txt','-ascii','im')

Here is a matlab code that does it:- %Read the image im = imread('a.jpg'); %Convert it to bw im = im2bw(im); %Open file stream fid = fopen('abc.txt','w'); [row col] = size(i); for x=1:row for y=1:col fprintf(fid,'%d ',i(x,y)); end fprintf(fid,'\n'); end fclose(fid); Hint: Use your file names instead of  'a.jpg' and 'abc.txt' also 'a.jpg' should be in the same folder as this script. Update: This will work with other image formats too.

%%%%%code for rgb to binary image I = imread('imagename.jpg/png'); %read image level=0.5; %  level value 1 (white) and 0 (black) BW = im2bw(I, level); %converts the truecolor image RGB to a binary image. imshow(I), figure, imshow(BW) %%%%%%%%%%% %%save as text file in form of matrix fid = fopen('myoutput.txt', 'w'); fprintf(fid, '%f', BW); fclose(fid);