why not just invertthe matrix? The inverse is
1.0022 0.0071 -0.0177 0.0528 -0.0146 0.9990 0.0027 -1.5519 0.0129 0.0094 1.0027 -1.2012 0 0 0 1.0000
On 11/12/2013 09:59 AM, Anita van Loenhoud wrote:
Dear FreeSurfers,
I have a question regarding conversion from MNI152 coordinates to MNI305 coordinates. I want to take ROIs from a VBM study and use these exact same ROIs in my vertexwise analysis. So I need to translate the x, y, z coordinates from MNI152 space into MNI305 space. In previous posts, I found a matrix that converts from MNI305 coordinates to MNI152:
M = [ 0.9975 -0.0073 0.0176 -0.0429 0.0146 1.0009 -0.0024 1.5496 -0.0130 -0.0093 0.9971 1.1840 0 0 0 1.0000] P305 = [MNI305x MNI305y MNI305z 1]'; P152 = M*P305
However, I want to do it the other way around. I tried to calculate the inverse matrix but haven't succeeded. Does anyone have (or know how to create) the matrix/formula I need?
It would be very helpful, thanks in advance.
Anita
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