MATLAB: How to obtain vertical and horizontal histogram of an image

histogramintensity differences

hi I have an image of face that I devided it into 3 RoIs and now I want to apply analysis of vertical histogram(showing the intensity differences between successive rows,pixel-wise) and horizontal histogram(showing the intensity differences between successive columns,pixel-wise). if anyone know how we can obtain the vertical and horizontal histogram of an image?

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What about

[countV, binValuesV] = hist(diff(yourImage, 1, 1))
[countH, binValuesH] = hist(diff(yourImage, 1, 2))

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MATLAB: How to calculate width and height of histogram

I'm not sure I understand that information is returned by hist()

X = randn(100,1);
[N,bincntr] = hist(X);

Now you know the count in each bin and the bin centers.

To find the boundaries, you can just do

Dx = mean(diff(bincntr));

Now you get the intervals as [bincntr-Dx/2, bincntr+Dx/2]

They are all of width Dx and height equal to the corresponding N

MATLAB: Ii want to know about, How to find a histogram of an uint8 image with 16 amplitude bins

histogram(YourImage(:), 16)

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MATLAB: How to calculate width and height of histogram

MATLAB: Ii want to know about, How to find a histogram of an uint8 image with 16 amplitude bins

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