fsl.data.constants
¶
This module defines some constant values used throughout fslpy
.
The following constants relate to the orientation of an axis, in either voxel or world space:
ORIENT_L2R |
The axis goes from left to right. |
ORIENT_R2L |
The axis goes from right to left. |
ORIENT_P2A |
The axis goes from posterior to anterior. |
ORIENT_A2P |
The axis goes from anterior to posterior. |
ORIENT_I2S |
The axis goes from inferior to superior. |
ORIENT_S2I |
The axis goes from superior to inferior. |
ORIENT_UNKNOWN |
The axis has an unknown orientation. |
These constants relate to the space in which a NIFTI image is assumed to be (i.e. the transformed coordinate space); they are defined in the NIFTI specification:
NIFTI_XFORM_UNKNOWN |
Arbitrary coordinates. |
NIFTI_XFORM_SCANNER_ANAT |
Scanner-based anatomical coordinates. |
NIFTI_XFORM_ALIGNED_ANAT |
Coordinates aligned to another file’s, or to anatomical “truth”. |
NIFTI_XFORM_TALAIRACH |
Coordinates aligned to Talairach-Tournoux Atlas; (0,0,0)=AC, etc. |
NIFTI_XFORM_MNI_152 |
MNI 152 normalized coordinates. |
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fsl.data.constants.
ORIENT_L2R
= 0¶ The axis goes from left to right.
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fsl.data.constants.
ORIENT_R2L
= 1¶ The axis goes from right to left.
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fsl.data.constants.
ORIENT_P2A
= 2¶ The axis goes from posterior to anterior.
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fsl.data.constants.
ORIENT_A2P
= 3¶ The axis goes from anterior to posterior.
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fsl.data.constants.
ORIENT_I2S
= 4¶ The axis goes from inferior to superior.
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fsl.data.constants.
ORIENT_S2I
= 5¶ The axis goes from superior to inferior.
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fsl.data.constants.
ORIENT_UNKNOWN
= -1¶ The axis has an unknown orientation.
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fsl.data.constants.
NIFTI_XFORM_UNKNOWN
= 0¶ Arbitrary coordinates.
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fsl.data.constants.
NIFTI_XFORM_SCANNER_ANAT
= 1¶ Scanner-based anatomical coordinates.
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fsl.data.constants.
NIFTI_XFORM_ALIGNED_ANAT
= 2¶ Coordinates aligned to another file’s, or to anatomical “truth”.
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fsl.data.constants.
NIFTI_XFORM_TALAIRACH
= 3¶ Coordinates aligned to Talairach-Tournoux Atlas; (0,0,0)=AC, etc.
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fsl.data.constants.
NIFTI_XFORM_MNI_152
= 4¶ MNI 152 normalized coordinates.
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fsl.data.constants.
NIFTI_XFORM_ANALYZE
= 5¶ Code which indicates that this is an ANALYZE image, not a NIFTI image.