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From: jassem on 25 May 2010 05:34
i have an color image I and i would compute the men and the variance
with matlab
how i can do these.
From: ImageAnalyst on 25 May 2010 06:07
The mean *what* and the variance of *what*?
Once you figure that out, there are mean(), var(), and std() functions.
From: Greg Heath on 25 May 2010 06:11
On May 25, 5:34 am, jassem <c2iis...(a)gmail.com> wrote:
> i have an color image I and i would compute the men and the variance
> with matlab
> how i can do these.

[m n] = size(image1)
meanimage1 = mean(image1(:))
varimage1 = var(image1(:))

Hope this helps.

Greg
From: ImageAnalyst on 25 May 2010 06:45
I think you mean
[rows columns numberOfColorBands] = size(image1) ;

with your formula, n returns the (number of color bands) * (the number
of columns).

Ad there are other things you can take the mean and variance of such
as the mean of the L or V channel, the Hue channel, etc. Just depends
on what you plan on doing with this information.
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