The output doesn't get the original text back.

Hello, I am doing project of image steganography. While extraction the secret file, the output doesn't get the original text back if I use the Text file(*.txt). May I know how to solve it?

% Clear the existing workspace 
clear var; 

% Clear the command window 
clc; 

% Getting the input image 

[rawname, rawpath]= uigetfile (('*.jpg'),'Select Image');
fullname = [rawpath rawname];
%set (handles., 'string', fullname);
input_image = imread(fullname);
imshow(input_image);

%imread('Encrypted6-image.jpg'); 

% Get height and width for traversing through the image 
height = size(input_image, 1); 
width = size(input_image, 2); 

% Number of characters of the hidden text 
chars = 100; 

% Number of bits in the message 
message_length = chars * 8; 

% counter to keep track of number of bits extracted 
counter = 1; 

% Traverse through the image 
for i = 1 : height 
	for j = 1 : width 
		
		% If more bits remain to be extracted 
		if (counter <= message_length) 
			
			% Store the LSB of the pixel in extracted_bits 
			extracted_bits(counter, 1) = mod(double(input_image(i, j)), 2); 
			
			% Increment the counter 
			counter = counter + 1; 
		end
	end
end

% Powers of 2 to get the ASCII value from binary 
binValues = [ 128 64 32 16 8 4 2 1 ]; 

% Get all the bits in 8 columned table 
% Each row is the bits of the character 
% in the hidden text 
binMatrix = reshape(extracted_bits, 8,(message_length/8)); 

% Convert the extracted bits to characters 
% by multiplying with powers of 2 
textString = char(binValues*binMatrix); 

% Print the hidden text 
disp(textString); 

Here is my extracted code and below is the output.

Answer 1

[Image Analyst]

I didn't delve into your code, but I'm attaching a demo of mine. Perhaps that will help you.

[Ei Sandar Tun]

Thank you very much, Sir.