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Bug 1295 - ensure consistent handling of the handedness of the volumetric data with respect to the real-world coordinate system
| Status | CLOSED WONTFIX |
| Reported | 2012-01-30 12:08:00 +0100 |
| Modified | 2012-07-07 20:25:21 +0200 |
| Product: | FieldTrip |
| Component: | core |
| Version: | unspecified |
| Hardware: | PC |
| Operating System: | Mac OS |
| Importance: | P3 normal |
| Assigned to: | Jan-Mathijs Schoffelen |
| URL: | |
| Tags: | |
| Depends on: | |
| Blocks: | 1325 |
| See also: |
Jan-Mathijs Schoffelen - 2012-01-30 12:08:58 +0100
Now it seems that ft_volumerealign cannot deal correctly with a left-handed volume (so probably needs a flipdim in one of the dimensions to work correctly in this case). first create a test script that implements a sphere in a volume with well defined 'landmarks'. then see what happens when the transformation matrix / orientation of volume are manipulated. determine whether robust detection of volume handedness can be achieved (possibly using ft_determine_coordsys) investigate the suitability of a general purpose flipping function to enforce right-handed volumes, or the suitability of working with left-handed volumes in a correct way. also check the functionality in ft_volumesegment, because some flipping is done there too.