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mean2 image processing question

thread575-108536

mean2 image processing question

mean2 image processing question

(OP)
Hi,
I need some help with the mean2 command in the image processing toolbox.
Basically id like to know how Matlab calculates the mean2 of an image that i have been using
All i have been able to find so far is that it "calculates the mean of an n-Dimensional array"

Can anyone describe briefly how the mean of an image is calculated??

Thanks
Jim O Doherty

RE: mean2 image processing question

Is it supposed to be something different than the sum of all the values of the array divided by the number of elements in the array

TTFN

RE: mean2 image processing question

(OP)
I am not sure. I know how to get the mean of an array, but my worry was that since an image is made up of 3 arrays (red green and blue) there is a certain value of red green and blue for each pixel present. I was wondering if Matlab takes this into account and how it deals with it

RE: mean2 image processing question

Why would you want to take the mean of a color image?

Shouldn't you convert to grayscale first?

TTFN

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