[Insight-users] image preprocessing

[Luis Ibanez]

Hi Sarah,

You may want to try the same filters that are used for correcting
for MRI intensity inhomogeneity.

See the directory:
InsightApplications/MRIBiasCorrection

These classes approximate the illumination distribution with a
polynomial, and then use the polynomial in order to normalize
the intensity across space.

You may also find useful the following paper of the Insight Journal:

"N4ITK: Nick's N3 ITK Implementation For MRI Bias Field Correction"
Tustison N., Gee J.
PICSL, University of Pennsylvania

http://www.insight-journal.org/browse/publication/640

http://hdl.handle.net/10380/3053



     Regards,


             Luis


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On Wed, Nov 4, 2009 at 5:28 PM, Sarah Waldron <sarah.waldron11 at yahoo.com>wrote:

> Hi,
> I'm new to ITK. I have a series of brain images taken with a camera that
> when combined are supposed to form a 3 dimensional volume. The camera had a
> flash and the slices don't all have the same lighting and shadowing effects.
> Does anyone have any suggestions how to correct this so that all the images
> have the same light distribution?
> Thanks,
> Sarah
>
>
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