2009 Winter Project Week Transform Management - Revision history

Millerjv: /* Key Investigators */

2008-12-08T16:09:01Z

Key Investigators

Millerjv: /* Key Investigators */

2008-12-08T16:08:13Z

Key Investigators

Millerjv at 16:02, 8 December 2008

2008-12-08T16:02:08Z

Millerjv: New page: {| |Project Week Main Page ]] |MRML scene graph. |[[Image:MRMLSceneWithTra...

2008-12-08T16:00:53Z

New page: {| |thumb|320px|Return to [[2009_Winter_Project_Week|Project Week Main Page ]] |thumb|320px|MRML scene graph. |[[Image:MRMLSceneWithTra...

New page

{|
|[[Image:NAMIC-SLC.jpg|thumb|320px|Return to [[2009_Winter_Project_Week|Project Week Main Page]] ]]
|[[Image:MRMLSceneGraph.png|thumb|320px|MRML scene graph.]]
|[[Image:MRMLSceneWithTransform.png|thumb|320px|Transform node in a MRML scene.]]
|}

__NOTOC__

===Key Investigators===
* Jim Miller, GE
* Steve Pieper, Isomics, Inc.

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<div style="width: 27%; float: left; padding-right: 3%;">

<h1>Objective</h1>
Provide the infrastructure to handle non-linear transformations as both modeling and resampling transforms.
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<div style="width: 27%; float: left; padding-right: 3%;">

<h1>Approach, Plan</h1>

We will continue the plans from the Summer 2008 project event ([[2008_Summer_Project_Week:Nonlinear_transforms|here]]).
* Add attribute to transform nodes to indicate whether they represent a "Transform to World/Parent" or "Transform from World/Parent"
* Extend visualization system for "Transform to World/Parent" or "Transform from World/Parent" _
* Extend command line modules to annotate a transformation as a "Transform to World/Parent" or "Transform from World/Parent"
* Identify places in slicer3 code where linear transforms are assumed - these either need generalization or informative warning/error messages
* Incorporate itkDisplacementFieldTransform/vtkGridTransform for vector field style transformations.
** Need to extend itk::TransformIO. Prototype using Base64/Zipped vector fields. Alternative, reference external image to hold vectors in file format.
* Coordinate frame manager to map between any two data sets verses mapping to parent/world.
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<h1>Progress</h1>

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<br style="clear: both;" />

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@@ Line 40: / Line 40: @@
 * Linear transformations are always stored in Slicer as modeling transformations.
-* Slicer assumes that pluins using ITK Transform file format want/return resampling transforms
+* Slicer assumes that plugins using ITK Transform file format want/return resampling transforms
 * Initial prototype of itkDisplacementFieldTransform using ITK Transform file format by Base64 encoding a Zipped version of a vector field (ITK Transform format is ASCII).
 * Mike Halle has a coordinate frame manager written in Python

@@ Line 31: / Line 31: @@
 * Identify places in slicer3 code where linear transforms are assumed - these either need generalization or informative warning/error messages
 * Incorporate itkDisplacementFieldTransform/vtkGridTransform for vector field style transformations.
-** Need to extend itk::TransformIO. Prototype using Base64/Zipped vector fields. Alternative, reference external image to hold vectors in file format.
+** Need to extend itk::TransformIO. Prototype using Base64/Zipped vector fields. Alternative, allow binary data in ITK Transform files or reference an external image to hold vectors in file format.
 * Coordinate frame manager to map between any two data sets verses mapping to parent/world.
 </div>
@@ Line 39: / Line 39: @@
 <h1>Progress</h1>
 </div>

@@ Line 28: / Line 28: @@
 * Add attribute to transform nodes to indicate whether they represent a "Transform to World/Parent" or "Transform from World/Parent"
 * Extend visualization system for "Transform to World/Parent" or "Transform from World/Parent" _
 * Extend command line modules to annotate a transformation as a "Transform to World/Parent" or "Transform from World/Parent"
 * Identify places in slicer3 code where linear transforms are assumed - these either need generalization or informative warning/error messages
 * Incorporate itkDisplacementFieldTransform/vtkGridTransform for vector field style transformations.