[vtkusers] Q: itk transformation file format

SG KIM solleo at gmail.com
Thu Mar 28 10:46:24 EDT 2013


Dear ITK/VTK experts,

I have a question on format of :itk: transformation file. 

In such a file (generated by ANTS): 
#Insight Transform File V1.0
# Transform 0
Transform: MatrixOffsetTransformBase_double_3_3
Parameters: a b c d e f g h i l m n
FixedParameters: x y z

Does it mean a transformation matrix as

T = [a b c x; d e f y; g h i z; l m n 1]

such that T * [x y z 1]^T = [x'/s y'/s z'/s 1]^T
where [x,y,z] is original coordinates and [x/s', y'/s, z'/s] is transformed coordinate with s as global scaling factor?

or something else?


Best,
---
Seung-Goo KIM

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