<br>Hi Pinpress,<br><br><br>Multi-threaded implementations of the ITK image metrics <br>were added to ITK a couple of years ago. They are described <br>in the following paper in the Insight Journal:<br><br> <a href="http://www.insight-journal.org/browse/publication/172">http://www.insight-journal.org/browse/publication/172</a><br>
<br>The code is now under the "Review" directory.<br><br>You can find the multi-threaded metrics by doing<br><br>cd Insight/Code/Review<br>ls *Metric*.h -1<br><br>that will show:<br><br>itkOptImageToImageMetric.h<br>
itkOptMatchCardinalityImageToImageMetric.h<br>itkOptMattesMutualInformationImageToImageMetric.h<br>itkOptMeanSquaresImageToImageMetric.h<br><br><br><br>The first one is the base class, <br>so, the answer to your question is:<br>
<br>The multi-threaded metrics in ITK are<br><br>* MatchCardinalityImageToImageMetric<br>
* MattesMutualInformationImageToImageMetric<br>* MeanSquaresImageToImageMetric<br>
<br><br>As a general rule, if you want to get a first hint of<br>whether a class is multithreaded or not, you could try<br><br> grep -l MultiThreader *<br><br>with the caveat that sometimes the threading code<br>
may have been defined in a base class.<br><br><br><br> Regards,<br><br><br> Luis<br><br><br>---------------------------------------------------------------------------<br><div class="gmail_quote">On Wed, Apr 21, 2010 at 10:42 AM, pinpress <span dir="ltr"><<a href="mailto:sb_ji@yahoo.com">sb_ji@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><br>
Hi all,<br>
<br>
I was just wondering if anyone knows how to find out whether a specific<br>
image similarity metric is multi-threaded or not. I searched on this forum,<br>
and it seems that some of the metrics (e.g., Mattes MI, mean squares<br>
difference) are. However, the problem is that these answers were provided a<br>
long time ago, presumably for a much earlier version of ITK. Since ITK is<br>
evolving over and over time, I just don't know how to find the related info<br>
on the "current" ITK release.<br>
<br>
Thanks very much.<br>
--<br>
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