Question about color histogram

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Piyush Kothyari
Piyush Kothyari 2016-1-29
评论： Piyush Kothyari 2016-2-5
Dear Sir/Ma'am
I implement the Color Histogram code for an image here is code what i want to implement
t1=imread('111.jpg');
t1r=t1(:,:,1);
t1g=t1(:,:,2);
t1b=t1(:,:,3);
figure;
subplot(221);imhist(t1r);title('Red Plane');
subplot(222);imhist(t1g);title('Green Plane');
subplot(223);imhist(t1b);title('Blue Plane');
subplot(224);imshow(t1);title('original image');
now i want to compute the probability histogram as follows
p(ri)=(Number of pixels in ri)/(width*height)
where p(ri) represents the relative frequency

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采纳的回答

Walter Roberson
Walter Roberson 2016-1-29
subplot(221); ri = imhist(t1r); title('Red Plane');
p = ri ./ numel(t1r);

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