Mean of 2 arrays

Hi, I have 2 arrays in a cell:

imag =

    [1130x2120 double]    [1130x2120 double]

How can i calculate the mean of both arrays together not of each one?

Answer 1

[John Doe]

One way would be:

mean(mean([imag{1} imag{2}]))

If the dimensions don't match:

mean([imag{1}(:); imag{2}(:)])

Answer 2

[Azzi Abdelmalek]

cellfun(@(x) mean(x(:)),imag)