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	<id>https://www.slicer.org/w/index.php?action=history&amp;feed=atom&amp;title=Documentation%2FLabs%2FNonlinearTransforms</id>
	<title>Documentation/Labs/NonlinearTransforms - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://www.slicer.org/w/index.php?action=history&amp;feed=atom&amp;title=Documentation%2FLabs%2FNonlinearTransforms"/>
	<link rel="alternate" type="text/html" href="https://www.slicer.org/w/index.php?title=Documentation/Labs/NonlinearTransforms&amp;action=history"/>
	<updated>2026-06-24T04:29:24Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.33.0</generator>
	<entry>
		<id>https://www.slicer.org/w/index.php?title=Documentation/Labs/NonlinearTransforms&amp;diff=36814&amp;oldid=prev</id>
		<title>Alexy: /* Code branch on github */</title>
		<link rel="alternate" type="text/html" href="https://www.slicer.org/w/index.php?title=Documentation/Labs/NonlinearTransforms&amp;diff=36814&amp;oldid=prev"/>
		<updated>2013-12-10T22:31:25Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Code branch on github&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Revision as of 22:31, 10 December 2013&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l38&quot; &gt;Line 38:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 38:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* vtkMRMLSliceLayerLogic class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* vtkMRMLSliceLayerLogic class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* vtkMRMLModelDisplayableManager class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* vtkMRMLModelDisplayableManager class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;=&lt;/del&gt;= Code branch on github &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;=&lt;/del&gt;=&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;= Code branch on github =&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;https://github.com/ayarmarkovich/Slicer/tree/xform_branch&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;https://github.com/ayarmarkovich/Slicer/tree/xform_branch&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Alexy</name></author>
		
	</entry>
	<entry>
		<id>https://www.slicer.org/w/index.php?title=Documentation/Labs/NonlinearTransforms&amp;diff=36813&amp;oldid=prev</id>
		<title>Alexy at 22:31, 10 December 2013</title>
		<link rel="alternate" type="text/html" href="https://www.slicer.org/w/index.php?title=Documentation/Labs/NonlinearTransforms&amp;diff=36813&amp;oldid=prev"/>
		<updated>2013-12-10T22:31:00Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Revision as of 22:31, 10 December 2013&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l38&quot; &gt;Line 38:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 38:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* vtkMRMLSliceLayerLogic class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* vtkMRMLSliceLayerLogic class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* vtkMRMLModelDisplayableManager class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* vtkMRMLModelDisplayableManager class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;== Code branch on github ==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;https://github.com/ayarmarkovich/Slicer/tree/xform_branch&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Alexy</name></author>
		
	</entry>
	<entry>
		<id>https://www.slicer.org/w/index.php?title=Documentation/Labs/NonlinearTransforms&amp;diff=36804&amp;oldid=prev</id>
		<title>Alexy: Created page with '= Motivation: current state of non-linear transforms in Slicer 4.2 =  Slicer 4.2 has a very limited non-linear transforms support.  * MRML nodes exist for BSpline and Grid transf…'</title>
		<link rel="alternate" type="text/html" href="https://www.slicer.org/w/index.php?title=Documentation/Labs/NonlinearTransforms&amp;diff=36804&amp;oldid=prev"/>
		<updated>2013-12-10T15:28:13Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;#039;= Motivation: current state of non-linear transforms in Slicer 4.2 =  Slicer 4.2 has a very limited non-linear transforms support.  * MRML nodes exist for BSpline and Grid transf…&amp;#039;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;= Motivation: current state of non-linear transforms in Slicer 4.2 =&lt;br /&gt;
&lt;br /&gt;
Slicer 4.2 has a very limited non-linear transforms support.&lt;br /&gt;
&lt;br /&gt;
* MRML nodes exist for BSpline and Grid transforms&lt;br /&gt;
* There is a number of CLI modules that input and output non-linear transforms&lt;br /&gt;
* There is no support for import/export of non-linear transforms&lt;br /&gt;
* There is no support in Data module for applying non-linear transforms by dragging Volumes and Models&lt;br /&gt;
* There is no support in Data module for hardening of non-linear transforms for Volumes and Models&lt;br /&gt;
* CLI modules input and output &amp;quot;resampling&amp;quot; transform, which transforms from parent space, where linear transforms are stored as &amp;quot;modeling&amp;quot; transforms, which transforms to parent space&lt;br /&gt;
&lt;br /&gt;
= New features implemented in this project =&lt;br /&gt;
&lt;br /&gt;
* Support for import/export of non-linear transforms&lt;br /&gt;
* Support in Data module for applying non-linear transforms by dragging Volumes and Models&lt;br /&gt;
* Support in Data module for hardening of non-linear transforms for Volumes and Models&lt;br /&gt;
* Support for both &amp;quot;to parent&amp;quot; and &amp;quot;from parent&amp;quot; types of transforms in MRML nodes (both linear and non-linear)&lt;br /&gt;
* Support for both &amp;quot;to world&amp;quot; and &amp;quot;from world&amp;quot; types of transforms in MRML nodes (both linear and non-linear)&lt;br /&gt;
* Support for caching of &amp;quot;to parent&amp;quot; and &amp;quot;from parent&amp;quot; types of transforms in MRML nodes (both linear and non-linear)&lt;br /&gt;
* Maintain backward compatibility with existing CLI modules&lt;br /&gt;
= MRML API changes =&lt;br /&gt;
== vtkMRMLTransformNode ==&lt;br /&gt;
* new method virtual vtkGeneralTransform*GetTransformFromParent()&lt;br /&gt;
* new method void GetTransformFromWorld(vtkGeneralTransform* transformToWorld)&lt;br /&gt;
* new flag vtkMRMLTransformNode::ReadWriteAsTransformToParent which tells storage nodes wheather to read/write transform data as from parent or to parent. The flag is implemented in vtkMRMLTransformNode to maintain backward compatibility with CLI modules that read/write non-linear transforms as “resampling” , from parent space transforms.&lt;br /&gt;
== vtkMRMLLinearTransformNode ==&lt;br /&gt;
* changed signature of the method virtual void GetMatrixTransformToParent(vtkMatrix4x4*)&lt;br /&gt;
* new method virtual void GetMatrixTransformFromParent(vtkMatrix4x4*);&lt;br /&gt;
* new method void SetAndObserveMatrixTransformFromParent(vtkMatrix4x4 *matrix);&lt;br /&gt;
== vtkMRMLNonlinearTransformNode ==&lt;br /&gt;
* changed signature of the method virtual void GeWarpTransformToParent(vtkWarpTransform*)&lt;br /&gt;
* new method virtual void GeWarpTransformFromParent(vtkWarpTransform*);&lt;br /&gt;
* new method void SetAndObserveWarpTransformFromParent(vtkWarpTransform*matrix);&lt;br /&gt;
== Other MRML nodes ==&lt;br /&gt;
* implemented above APIs in vtkMRMLBSplineTransformNode and vtkMRMLGridTransformNode&lt;br /&gt;
*  added support for applying transforms (hardening) to Volume and Model nodes&lt;br /&gt;
= Support for dragging under non-linear transforms in Data module =&lt;br /&gt;
* vtkMRMLSliceLayerLogic class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;br /&gt;
* vtkMRMLModelDisplayableManager class has been redesigned to deal with generic transforms rather than just vtkMatrix4x4&lt;/div&gt;</summary>
		<author><name>Alexy</name></author>
		
	</entry>
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