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ID | Project | Category | View Status | Date Submitted | Last Update | ||||
0007378 | VTK | (No Category) | public | 2008-07-21 15:40 | 2008-07-26 13:07 | ||||
Reporter | Mathieu Coursolle | ||||||||
Assigned To | David Gobbi | ||||||||
Priority | normal | Severity | major | Reproducibility | always | ||||
Status | closed | Resolution | fixed | ||||||
Platform | OS | OS Version | |||||||
Product Version | |||||||||
Target Version | Fixed in Version | ||||||||
Summary | 0007378: vtkMINCImageReader does not read slice offset properly. | ||||||||
Description | The MINC file format specifies the value range for each 2D slice of the 3D data. For files where the global minimum value is non-zero and negative, the loaded vtkImageData does not have the right value offset per slice. The background value is then different for each slice of the data. The resulting image was compared with difference softwares such as Neurolens, MINC tools, Brainsight and none of them shows the artefacts seen with the vtkMINCImageReader. | ||||||||
Additional Information | Screenshots are provided. | ||||||||
Tags | No tags attached. | ||||||||
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Attached Files | LeftBaseline_RightVTK.png [^] (73,221 bytes) 2008-07-21 15:40
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Notes | |
(0012780) Sean McBride (developer) 2008-07-21 15:49 |
David, we have a MINC1 file that repros this, but it is too big to attach here (18MB), we can arrange to get it to you some other way if needed... |
(0012810) David Gobbi (developer) 2008-07-23 14:06 |
This bug manifests itself for minc images that are stored as float with a different image-min and image-max for each slice, it actually doesn't have to do with whether the global minimum is negative. It's just that a global minimum of zero will mask the bug. I have committed a fix to vtkMINCImageReader so that float images are read with global scaling, which fixes the supplied image and which I believe to be the correct fix. |
(0012820) Mathieu Coursolle (reporter) 2008-07-25 08:58 |
Fix seems to solve the problem. I suggest that this issue be closed. |
Notes |
Issue History | |||
Date Modified | Username | Field | Change |
2008-07-21 15:40 | Mathieu Coursolle | New Issue | |
2008-07-21 15:40 | Mathieu Coursolle | File Added: LeftBaseline_RightVTK.png | |
2008-07-21 15:42 | Sean McBride | Status | backlog => tabled |
2008-07-21 15:42 | Sean McBride | Assigned To | => David Gobbi |
2008-07-21 15:49 | Sean McBride | Note Added: 0012780 | |
2008-07-23 14:06 | David Gobbi | Note Added: 0012810 | |
2008-07-25 05:56 | David Gobbi | Resolution | open => fixed |
2008-07-25 08:58 | Mathieu Coursolle | Note Added: 0012820 | |
2008-07-26 13:07 | David Gobbi | Status | tabled => closed |
2011-06-16 13:11 | Zack Galbreath | Category | => (No Category) |
Issue History |
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