users > RE: Space directions smaller than 1
Apr 19, 2016  01:04 PM | Tommaso Bertoni
RE: Space directions smaller than 1
Hi,

Here is what i get with pixel size=1

File format: Nrrd image file [File].
713 x 788 x 20 voxels
Original image orientation: LPS
Uniform volume
1.000000 x 1.000000 x 8.000000 [] voxel size
712.000000 x 787.000000 x 152.000000 [] volume size
Volume origin (0.000000,0.000000,0.000000)

Image-to-physical matrix:
1.000000 0.000000 -0.000000 -712.000000
-0.000000 1.000000 -0.000000 -787.000000
0.000000 0.000000 1.000000 0.000000
0.000000 0.000000 0.000000 1.000000

And here with pixel size = 0.1

File format: Nrrd image file [File].
713 x 788 x 20 voxels
Original image orientation: LPS
Uniform volume
0.100000 x 0.100000 x 8.000000 [] voxel size
71.200000 x 78.700000 x 152.000000 [] volume size
Volume origin (0.000000,0.000000,0.000000)

Image-to-physical matrix:
1.000000 0.000000 -0.000000 -71.200000
-0.000000 1.000000 -0.000000 -78.700000
0.000000 0.000000 1.000000 0.000000
0.000000 0.000000 0.000000 1.000000


A part from the obvious scaling, the output looks exactly the same. I am reassured since I guess this means that the transformations are computed in the same reference frame.

I am currently using version 3.2.2 for Linux, I will try to update and tell you whether the problem still appears.

Thank you,

Best,

Tommaso

Threaded View

TitleAuthorDate
Tommaso Bertoni Apr 12, 2016
Torsten Rohlfing Apr 15, 2016
Tommaso Bertoni Apr 15, 2016
Torsten Rohlfing Apr 16, 2016
RE: Space directions smaller than 1
Tommaso Bertoni Apr 19, 2016
Torsten Rohlfing Apr 20, 2016