MATLAB: How to hide an image into a cover image using LSB

Question

Im not geting the hidden image using this code

clear all; 
% read in the cover object you want to use for embedding
file_name='image.bmp';
cover_object=imread(file_name);
% read the message image you want to hide in the cover image
file_name='index.bmp';
message= imread(file_name);
% conversions needed to spread the image values on a 256 gray-scale
message=double(message);
message=round(message./256);
message=uint8(message);
% determine the size of cover image used for embedding
Mc=size(cover_object,1);  %Height


Nc=size(cover_object,2);  %Width


% determine the size of message object to embed
Mm=size(message,1);          %Height
Nm=size(message,2);          %Width
%y = uint8(wgn(Mm,Nm,1));
% title the message object out to cover object size to generate watermark
for ii = 1:Mc
    for jj = 1:Nc
        watermark(ii,jj)=message(mod(ii,Mm)+1,mod(jj,Nm)+1);
    end
end
% set the LSB of cover_object(ii,jj) to the value of the MSB of watermark(ii,jj)
watermarked_image=cover_object;
for ii = 1:Mc
    for jj = 1:Nc
        watermarked_image(ii,jj)=bitset(watermarked_image(ii,jj),1,watermark(ii,jj));
    end
end
% add noise to watermarked image
noisy = imnoise(watermarked_image,'gaussian');
% write to file the two images
imwrite(watermarked_image,'lsb_watermarked.bmp','bmp');
imwrite(noisy,'lsb_watermarked_noise.bmp','bmp');
% display watermarked image
figure(1)
imshow(watermarked_image,[])
title('Watermarked Image')
% display watermarked and noised image
figure(2)
imshow(noisy,[])
title('Watermarked and noised Image')
%Project:   Tutorial on Least Significant Bit Substitution
%               Watermark Recover
clear all;
% read in watermarked image
file_name='lsb_watermarked.bmp';
watermarked_image=imread(file_name);
% determine size of watermarked image
Mw=size(watermarked_image,1);  %Height
Nw=size(watermarked_image,2);  %Width
% use lsb of watermarked image to recover watermark
for ii = 1:Mw
    for jj = 1:Nw
        watermark(ii,jj)=bitget(watermarked_image(ii,jj),1);
    end
end
% scale the recovered watermark
watermark=256*double(watermark);
% scale and display recovered watermark
figure(1)
imshow(watermark,[])
%disp(char(watermark))
title('Recovered Watermark')

Answer 1

See attached demo for LSB watermarking.