2d matrix to 3d matrix

hello I have an image in 2d (480*720) and i use the density of pixel as a heightmap i need to convert it to 3d matrix (345600*245600*345600)

can any body help please?

[Geoff Hayes]

Mohamad - is your 2D matrix 480x720? And if so, how do you convert that to the 3456000x2456000x3456000 matrix?

[Image Analyst]

And that's 3 * 10^16 or 30,000,000,000,000,000 or 30 quadrillion elements or 240 quadrillion bytes. Can you tell me where you got your computer that can handle such big arrays - I want one!