Question

6. Read fractal_iris.tif and show the 7th (MSB), 6t", 5th, 4t", 3rd, 2nd, 1st and 0th (LSB) bit- plane images in a new figure. Title them accordingly. Comment on the result.

I want to get matlab codes of this question and learn the technic thank you.

I can't upload orginal image and random image is okey for me i just want to learn tecnic on matlab to do this question. This is the question that's it

Answer 1

A = imread('brain1.tif'); % import the image
img=double(A(:,:,1));      % take one of the R G B value to make it grayscale , also convert values to double for later convenience
[y x] = size(img);         % get the dimension of the image
k = de2bi(img,8);          % convert the double image into binary. the reason to get double values was to use this function

bit7 = vec2mat(k(:,1),x); % it will extract the MSB of matrix in vector form and then converted into matrix form using vec2mat inbuild function
bit6 = vec2mat(k(:,2),x);
bit5 = vec2mat(k(:,3),x);
bit4 = vec2mat(k(:,4),x);
bit3 = vec2mat(k(:,5),x);
bit2 = vec2mat(k(:,6),x);
bit1 = vec2mat(k(:,7),x);
bit0 = vec2mat(k(:,8),x); % it will do the same for LSB

figure;     % a figure plotted
subplot(2,4,1); % subplot created
imshow(bit0);    % plot put on figure
title('bit0');   %title added
subplot(2,4,2);
imshow(bit1);
title('bit1');
subplot(2,4,3);
imshow(bit2);
title('bit2');
subplot(2,4,4);
imshow(bit3);
title('bit3');
subplot(2,4,5);
imshow(bit4);
title('bit4');
subplot(2,4,6);
imshow(bit5);
title('bit5');
subplot(2,4,7);
imshow(bit6);
title('bit6');
subplot(2,4,8);
imshow(bit7);
title('bit7');    % MSB bit matrix plane

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Above code will import tif image into matlab.

Image is converted into grayscale and then its double value is used as previous uint8 is not for much use.

This image is converted into binary using deb2bi inbuilt function. This function converts it into vector so again vec2mat converts it to matrix form of column size x.

subplot function is used to plot the bit planes in a figure in 2 x 4 format.

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output is :-

bito biti bit2 bit3 bit4 bit5 bit6 bit7 SWIE