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how do I display the histogram of each image D1, D2, D3, and D4 by using the corresponding image using the subplot command? Each histogram should contain 256 pixels values

Asked by John Marl on 10 Nov 2018 at 22:12
Latest activity Answered by Walter Roberson
on 10 Nov 2018 at 22:16
a=imread('C:\Users\Nathan Donatell\Pictures\SanDiego.jpg');
g = rgb2gray(a);
b = im2double(g);
c= mat2gray(a);
D1=c .^(1/4);
D2=c .^(1/2);
D3=c .^(2/2);
D4=c .^(3/2);
subplot(2,2,1); imshow(D1); title('1/4');
subplot(2,2,2); imshow(D2); title('1/2');
subplot(2,2,3); imshow(D3); title('2/2');
subplot(2,2,4); imshow(D4); title('3/2');

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1 Answer

Answer by Walter Roberson
on 10 Nov 2018 at 22:16

a=imread('C:\Users\Nathan Donatell\Pictures\SanDiego.jpg');
g = rgb2gray(a);
b = im2double(g);
c= mat2gray(a);
D1=c .^(1/4);
D2=c .^(1/2);
D3=c .^(2/2);
D4=c .^(3/2);
subplot(2,4,1); imshow(D1); title('1/4');
subplot(2,4,5); imhist(D1, 256*1/4);
subplot(2,4,2); imshow(D2); title('1/2');
subplot(2,4,6); imhist(D2, 256*1/2);
subplot(2,4,3); imshow(D3); title('2/2');
subplot(2,4,7); imhist(D3, 256*2/2);
subplot(2,4,4); imshow(D4); title('3/2');
subplot(2,4,8); imhist(D4, 256*3/2);

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