# Choosing the Image Interpolation Method

If you correct images for anisotropic voxels or magnify images, the images must be interpolated
before they are displayed. By default, MultiTracer is set to the most accurate, but also the
slowest interpolation method (FFT/Chirp-z). With this interpolation method, integer magnification
values can be noticeably faster than non-integer values and odd integers can be faster than a smaller
even integer. This is the result of mathematical simplications that are possible for integers in
general and odd integers in particular.

The interpolation method is irrelevant if you do not magnify images and display them anisotropically.

## Main window

- To change the interpolation method of the main display:
- Choose the interpolation method from the "Interpolation" submenu of the main window's "Intensity" menu

## Orthogonal windows

- To change the interpolation method of the an orthogonal window:
- Choose the interpolation method from the "Interpolation" submenu of the orthogonal window's "Intensity" menu

©2001-2003 Roger P. Woods, M.D.
Modified: January 18, 2003