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<p class="owaPara">The LDDMMMatrix.dat file is a raw float data file. It contains the metrix distance in three directions. In your case, it is (x,y,z)*<font color="#000080">256x256x512.</font></p>
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<div dir="ltr" id="divRplyFwdMsg"><font style="FONT-SIZE: 11pt" color="#000000" face="Calibri, sans-serif"><b>From:</b> mristudio-users-bounces@mristudio.org <mristudio-users-bounces@mristudio.org> on behalf of Shangbin Chen Ph.D. <sbchen@mail.hust.edu.cn><br>
<b>Sent:</b> Friday, March 7, 2014 8:06 PM<br>
<b>To:</b> DTI Studio, ROI Editor,DiffeoMap Questions/Support<br>
<b>Subject:</b> Re: [Mristudio-users] How to use the output matrix of LDDMM fromDiffeoMap (resend without the attached file)</font>
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<div><font color="#000080" size="2" face="Verdana">Dear experts,</font></div>
<div><font color="#000080"></font> </div>
<div><font color="#000080"> Thank you for your prompt response.</font></div>
<div> </div>
<div><font color="#000080"> In my case, I want to know the quantitative metric mapping information in some specific regions.</font></div>
<div><font color="#000080"> </font></div>
<div><font color="#000080"> Can I get more information about the LDDMMMatrix.dat? Can I use Matlab or ImageJ to load LDDMMMatrix.dat? If so, how?</font></div>
<div><font color="#000080"></font> </div>
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<div><font color="#000080">Best regards,</font></div>
<div><font color="#000080">Shangbin</font></div>
<div><font color="#000080" size="2" face="Verdana"></font> </div>
<div><font color="#000080" size="2" face="Verdana"></font> </div>
<div><font color="#c0c0c0" size="2" face="Verdana">2014-03-08 </font></div>
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<div><font color="#c0c0c0" size="2" face="Verdana"><span>Shangbin Chen Ph.D.</span>
</font></div>
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<div><font size="2" face="Verdana"><strong>发件人：</strong> Xin Li </font></div>
<div><font size="2" face="Verdana"><strong>发送时间：</strong> 2014-03-07 23:07:00 </font>
</div>
<div><font size="2" face="Verdana"><strong>收件人：</strong> DTI Studio, ROI Editor, DiffeoMap Questions/Support
</font></div>
<div><font size="2" face="Verdana"><strong>抄送：</strong> </font></div>
<div><font size="2" face="Verdana"><strong>主题：</strong> Re: [Mristudio-users] How to use the output matrix of LDDMM fromDiffeoMap (resend without the attached file)
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<p class="owaPara">The LDDMMatrix.dat file gives the metric mapping information. You can apply this mapping file to an image by clicking "Load Transformation Matrix" and selecting "LDDMM Matrix (Raw Data)".</p>
<p class="owaPara"> </p>
<p class="owaPara"> </p>
<p class="owaPara">Xin</p>
<p class="owaP"></p>
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<div dir="ltr" id="divRplyFwdMsg"><font style="FONT-SIZE: 11pt" color="#000000" face="Calibri, sans-serif"><b>From:</b> mristudio-users-bounces@mristudio.org <mristudio-users-bounces@mristudio.org> on behalf of Shangbin Chen Ph.D. <sbchen@mail.hust.edu.cn><br>
<b>Sent:</b> Thursday, March 6, 2014 8:30 PM<br>
<b>To:</b> DTI Studio, ROI Editor,DiffeoMap Questions/Support<br>
<b>Subject:</b> [Mristudio-users] How to use the output matrix of LDDMM from DiffeoMap (resend without the attached file)</font>
<div> </div>
</div>
<div>
<div><font color="#000080">Dear experts,</font></div>
<div><font color="#000080"></font> </div>
<div><font color="#000080"> Many thanks for your help in DiffeoMap. I have got to know how to use the output matrix of Landmark-based Affine registration.</font></div>
<div><font color="#000080"></font> </div>
<div><font color="#000080"> Today, I did 16 Landmark-based LDDMM. The parameters were 3D downsample X:2, Y:2, Z:2 with some other default parameters. I noticed two files (LDDMMMatrix.dat and LDDMMMatrix.hdr) had been saved in my folder. In my case, the template
and the subject 3D images are both 256x256x512 (~32 MB). But the output data LDDMMMatrix.dat are about 393 MB. Here I have two questions:</font></div>
<div><font color="#000080"></font> </div>
<div><font color="#000080">1) What is the content inside the LDDMMMatrix.dat?</font></div>
<div><font color="#000080">2) How to use the LDDMMmatrix.dat?</font></div>
<div><font color="#000080"></font> </div>
<div><font color="#000080">Best regards,</font></div>
<div><font color="#000080">Shangbin</font></div>
<div><font color="#000080"></font> </div>
<div><font color="#000080"></font></div>
<div><font color="#000080"></font> </div>
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<div><font color="#c0c0c0" size="2" face="Verdana">2014-03-05 </font></div>
<font color="#000080" size="2" face="Verdana">
<hr style="WIDTH: 100px" align="left" color="#b5c4df" size="1">
</font>
<div><font color="#c0c0c0" size="2" face="Verdana"><span>Shangbin Chen Ph.D.</span>
</font></div>
<hr color="#b5c4df" size="1">
<div><font size="2" face="Verdana"><strong>发件人：</strong> Susumu Mori </font></div>
<div><font size="2" face="Verdana"><strong>发送时间：</strong> 2014-03-04 07:15:55 </font>
</div>
<div><font size="2" face="Verdana"><strong>收件人：</strong> DTI Studio, ROI Editor, DiffeoMap Questions/Support
</font></div>
<div><font size="2" face="Verdana"><strong>抄送：</strong> </font></div>
<div><font size="2" face="Verdana"><strong>主题：</strong> Re: [Mristudio-users] How to use the output matrix of Affineregistration from DiffeoMap
</font></div>
<div><font size="2" face="Verdana"></font></div>
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<div dir="ltr">You can load this matrix to DiffoeMap and apply it to the image you loaded.</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Mon, Mar 3, 2014 at 9:12 AM, Xin Li <span dir="ltr"><<a href="mailto:xli16@jhmi.edu" target="_blank">xli16@jhmi.edu</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
The first 3 rows is the 3x3 rotation matrix. The last row is the translation vector.<br>
<br>
________________________________________<br>
From: <a href="mailto:mristudio-users-bounces@mristudio.org">mristudio-users-bounces@mristudio.org</a> [<a href="mailto:mristudio-users-bounces@mristudio.org">mristudio-users-bounces@mristudio.org</a>] on behalf of Shangbin Chen Ph.D. [<a href="mailto:sbchen@mail.hust.edu.cn">sbchen@mail.hust.edu.cn</a>]<br>
Sent: Sunday, March 2, 2014 9:20 PM<br>
To: DTI Studio, ROI Editor,DiffeoMap Questions/Support<br>
Subject: [Mristudio-users] How to use the output matrix of Affine registration from DiffeoMap<br>
<div>
<div class="h5"><br>
Dear experts,<br>
<br>
I am using DiffeoMap for 3D registration. I have done markers-based affine registration with satisfying result. But I cannot understant the meaning of the output matrix which is 4x3 array. Could you tell me some details on this matrix? Or how to use the
matrix to do affine transformation?<br>
<br>
Best regards,<br>
Shangbin<br>
<br>
<br>
2014-03-03<br>
________________________________<br>
Shangbin Chen Ph.D.<br>
________________________________<br>
<br>
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