Dividing an image by another one

["i"]

Hello guys,

I'm trying to divide an image by another one. Tried first using AimsPowerComb with -c -1 but it does not seem to work. Then, I discovered AimsDivide but i'm not sure to really understand how it's working as the range of values of the output file is not corresponding.

Thx in advance for your help.

[riviere]

Hi,
You can use cartoLinearComb.py:

Code: Select all

cartoLinearComb.py -i image1.nii -i image2.nii -o divided.nii -f "I1/I2"

You will have to make sure that the voxel type of input images is appropriate for the output too, since the output voxel type is the same as inputs.
Denis

["i"]

Thanks Denis,

I tried the command with homogenous input files but always got output files without any value ("Not a Number"). It only works when I divide one image by itself...

Laurent

[riviere]

Maybe there are voxels with a zero value in the denominator image ?