Extracting random patches from a image

I have to extract 30 random patches of size 32*32 from an image and then storing all that patches in a single matrix.

please help!

[Rik]

What have you tried so far?

[Aniket Kumar]

I have done this using for loop but that extracts patches sequentially not randomly.

I was looking if there is any direct function in matlab, which does nearly the same.

[Rik]

You could use the randi function to generate random centerpoints and expand those to full patches.