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

Question

John Marl 2018-11-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/429152-how-do-i-display-the-histogram-of-each-image-d1-d2-d3-and-d4-by-using-the-corresponding-image-usi

回答： Walter Roberson 2018-11-10

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');

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2018-11-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/429152-how-do-i-display-the-histogram-of-each-image-d1-d2-d3-and-d4-by-using-the-corresponding-image-usi#answer_346256

在 MATLAB Online 中打开

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);