MantisBT - VTK | |||||
| View Issue Details | |||||
| ID | Project | Category | View Status | Date Submitted | Last Update |
| 0011837 | VTK | (No Category) | public | 2011-02-10 12:20 | 2011-02-10 13:44 |
| Reporter | David Gobbi | ||||
| Assigned To | David Gobbi | ||||
| Priority | normal | Severity | major | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| Platform | OS | OS Version | |||
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| Target Version | Fixed in Version | ||||
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| Summary | 0011837: Wrong result for warp transforms in some circumstances | ||||
| Description | If the reslice input origin, spacing are 0.0, 1.0 and if the ResliceAxes are not set or are identity, then any warp transform (i.e. transform not expressible as a 4x4 matrix) will be applied with an incorrect shift and/or scale applied to the coordinates, unless the output origin, spacing are also 0.0, 1.0. These circumstances seem to be rare enough that this bug has gone undetected since it was introduced in Aug, 2001 by commit 5a638df69fe075a1d231b307fd354edd2cb890e7. | ||||
| Steps To Reproduce | In Hybrid/Testing/Tcl/TestGridWarpCubic.tcl, add the following lines to the reslice setup: reslice SetOutputOrigin -32.0 -32.0 0.0 reslice SetOutputExtent 0 255 0 255 0 0 One would expect that this would cause a translation in the output, but it does not. | ||||
| Additional Information | The following patch fixes the issue: --- a/Imaging/vtkImageReslice.cxx +++ b/Imaging/vtkImageReslice.cxx @@ -3514,7 +3514,7 @@ vtkMatrix4x4 *vtkImageReslice::GetIndexMatrix(vtkInformation *inInfo, if ((this->OptimizedTransform == NULL && (inSpacing[i] != outSpacing[i] || inOrigin[i] != outOrigin[i])) || (this->OptimizedTransform != NULL && - (inSpacing[i] != 1.0 || inOrigin[i] != 0.0))) + (outSpacing[i] != 1.0 || outOrigin[i] != 0.0))) { isIdentity = 0; } | ||||
| Tags | No tags attached. | ||||
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| Issue History | |||||
| Date Modified | Username | Field | Change | ||
| 2011-02-10 12:20 | David Gobbi | New Issue | |||
| 2011-02-10 12:20 | David Gobbi | Status | backlog => tabled | ||
| 2011-02-10 12:20 | David Gobbi | Assigned To | => David Gobbi | ||
| 2011-02-10 13:44 | David Gobbi | Note Added: 0025381 | |||
| 2011-02-10 13:44 | David Gobbi | Status | tabled => closed | ||
| 2011-02-10 13:44 | David Gobbi | Resolution | open => fixed | ||
| Notes | |||||
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