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help > RE: Using acpcdetect to get pitch, roll, and yaw
Nov 2, 2018 05:11 PM | Babak Ardekani
RE: Using acpcdetect to get pitch, roll, and yaw
Originally posted by Pravesh Parekh:
Hmm... very curious. Is it possible that SPM and ART are using different conventions. In ART RAS means that the x-axis is pointing TOWARDS Right, y-axis is pointing TOWARDS Anterior, and the z-axis is point TOWARDS superior directions.
It may be that under SPM RAS means the the x-axis is pointing FROM Right (to left) and the y-axis is point FROM Anterior (to superior) etc.
I just realised that SPM is reporting the
opposite orientation than what acpcdetect is reporting; SPM says
the original image is LPI right handed while acpcdetect says the
original image is RAS. Similarly, the default RAS orientation
output by acpcdetect is still reported as right handed LPI. If I
force acpcdetect to output LPI, SPM reports that file as left
handed RAS!
Hmm... very curious. Is it possible that SPM and ART are using different conventions. In ART RAS means that the x-axis is pointing TOWARDS Right, y-axis is pointing TOWARDS Anterior, and the z-axis is point TOWARDS superior directions.
It may be that under SPM RAS means the the x-axis is pointing FROM Right (to left) and the y-axis is point FROM Anterior (to superior) etc.
Threaded View
Title | Author | Date |
---|---|---|
Pravesh Parekh | Oct 31, 2018 | |
Pravesh Parekh | Nov 2, 2018 | |
Babak Ardekani | Nov 2, 2018 | |
Babak Ardekani | Nov 2, 2018 | |
Pravesh Parekh | Nov 2, 2018 | |
Babak Ardekani | Nov 2, 2018 | |
Pravesh Parekh | Nov 3, 2018 | |
Babak Ardekani | Nov 6, 2018 | |
Babak Ardekani | Oct 31, 2018 | |
Pravesh Parekh | Nov 1, 2018 | |
Babak Ardekani | Nov 2, 2018 | |
Pravesh Parekh | Nov 2, 2018 | |