How to take summation of different bins of histogram

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anu
anu 2016-7-22
评论： Image Analyst 2016-7-25
I am new to Matlab. I have created three separate arrays rarray,garray,barray to store RGB values of an image. After this I have created histogram for these three channels. How take addition of different bins for every channel?

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Image Analyst
Image Analyst 2016-7-22
I don't know what you mean by "different" bins, but to add up corresponding bins, just add
redCounts = imhist(rgbImage(:,:,1));
greenCounts = imhist(rgbImage(:,:,2));
blueCounts = imhist(rgbImage(:,:,3));
overallCounts = redCounts + greenCounts + blueCounts ;
Of course it's even easier to do it all in one step:
overallCounts = imhist(rgbImage(:));
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anu
anu 2016-7-25
Thanks. But I tried for 10-11 images. I am getting different values for 256 bins. But when I take the summation of redCounts, greenCounts, blueCounts separately getting the same values for all three channels. I dont why I am getting same addition for all three channels even though I tested on 5-6 images.
Image Analyst
Image Analyst 2016-7-25
Neither can we, until we see your code and you upload at least two images.

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Azzi Abdelmalek
Azzi Abdelmalek 2016-7-22
编辑：Azzi Abdelmalek 2016-7-22
A=randi(10,5,4,3)
B=squeeze(sum(sum(A,1)))

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