<div dir="ltr"><span style="color:rgb(0,0,0);font-family:Geneva,Arial,Helvetica,sans-serif;font-size:14px"><i>"This class in not thread safe due the private data structures used to the store the sampled points and the marginal and joint pdfs." [1]</i></span><br>
<div><span style="color:rgb(0,0,0);font-family:Geneva,Arial,Helvetica,sans-serif;font-size:14px"><i><br></i></span></div><div><span style="color:rgb(0,0,0);font-family:Geneva,Arial,Helvetica,sans-serif;font-size:14px"><i>[1] </i></span><a href="http://www.itk.org/Doxygen314/html/classitk_1_1MattesMutualInformationImageToImageMetric.html">http://www.itk.org/Doxygen314/html/classitk_1_1MattesMutualInformationImageToImageMetric.html</a></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Mar 12, 2013 at 4:50 PM, Rick Frank <span dir="ltr"><<a href="mailto:rfrank@dominionsw.com" target="_blank">rfrank@dominionsw.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>What is the reason it is not thread safe?<br><br>Rick Frank</div><div><div class="h5"><div><br>On Mar 12, 2013, at 2:10 PM, "Tim Allman" <<a href="mailto:dr.tim.allman@gmail.com" target="_blank">dr.tim.allman@gmail.com</a>> wrote:<br>
<br></div><blockquote type="cite"><div>
I have been living with mutual information day and night for a
while. You can get more information about Normalised MI in D.
Rueckert et al. IEEE Trans. Med. Imag., 18 712 (1999) and Mattes MI
in Mattes et al IEEE Trans. Med. Imag., 22 120-128 (2003) and
references contained therein.<br>
<br>
If you understand the methods in the papers, the ITK classes start
to make sense in spite of the poor documentation. It is undocumented
but true that Mattes MI is not thread safe so you must set the
number of threads it uses to 1. I don't know about the other.<br>
<br>
Tim<br>
<br>
<div>On 13-03-12 01:26 PM, Pedro Morais
wrote:<br>
</div>
<blockquote type="cite">Good afternoon,
<div><br>
</div>
<div>I'm working with Mattes Mutual Information to register a MRI
sequence.</div>
<div>Someone can send me some information about Mattes Mutual
Information implementation, there are a lot of parameters but I
think that the documentation is not enough.</div>
<div>I don't understand what is the difference between the
Normalized Mutual Information and Mattes Mutual Information. I
need to decide between the two methods, but I need to know the
advantagens of each technique.</div>
<div><br>
</div>
<div>Thanks for the help.</div>
<div>
<div>-- </div>
<div>Kind Regards,</div>
<div><br>
</div>
Pedro Morais
</div>
<br>
<fieldset></fieldset>
<br>
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<br>
<pre cols="72">--
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Canada
</pre>
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