How to find a variance to an image

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mani on 2 Feb 2011

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https://in.mathworks.com/matlabcentral/answers/694-how-to-find-a-variance-to-an-image

I used var(image(:)) but i am getting wrong answer.

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Andreas Goser on 2 Feb 2011

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https://in.mathworks.com/matlabcentral/answers/694-how-to-find-a-variance-to-an-image#answer_1019

The IMAGE function returns a handle, see

http://www.mathworks.com/help/techdoc/ref/image.html

I expect VAR over a handle is not what you like to get.

A specifc example and an explanation what a "wrong answer" is exactly will help the community to be able to help you.

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Sean de Wolski on 2 Feb 2011

Taking a stab in the dark, I would guess they overwrote image.

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