[Insight-users] A question about MRIBiasCorrection

[Song Ting]

Dear group,

I have a question when I use the 'MRIBiasCorrection'.
I am not sure about the parameters that I used.

./BiasFieldEstimator --input esulla_input.mhd --class-mean 106.150716 
75.854006 38.056458 0 
--class-sigma 8.412902 13.128059 13.299162 0 --use-log yes --input-mask 
esulla_output_mask.mhd --degree 3 --grow 1.05 --shrink 0.9 max-iteration 
2000 --init-step-size 1.02

I am more concerned about the degree number, since degree=1 and degree=3 
gave very different results. I attached two images which are the histogram 
before and after the correction and a slice of the 3D volume image and its 
bias field image.

Thanks,
Ting

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