# zoom_out_x2_3D.m

E. Koenig, 08/04/2010

Zoom out of a 3D field to a lower resolution.

The new resolution is 2 times lower than the initial one. The zoom out is realized by aggregating voxels.

## Contents

- Use
- Inputs
- Outputs
- Example

## Use

I_out = zoom_out_x2_3D(I);

## Inputs

- I: input 3D field.

## Outputs

- I_out: lower resolution 3D field.

## Example

Zoom out of a 8x8x8 random field:

      I = randn(8,8,8);
      I_out = zoom_out_x2_3D(I);