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<p class="MsoNormal"><span lang="EN-GB">Dear all,<br>
<br>
I’m testing this particular module to evaluate a 2D/3D registration context.<br>
I was able to obtain DRRs using Siddon-Jacobs ray tracing method (starting point is an FDK of POPI model) and as a proof of concept I fed two of these resulting projections (first at the correct angles and centering, then at small tilted angles with added displacement
to the CT volume center).<br>
What I noticed is that the computation of a single step in the registration is incredibly slow even in the case where the initial transform is already at the correct position (around 60”).<br>
I think the long computation times are possibly caused by metric calculation on the 2 Projections vs the DRRs generated from the volume by the interpolators (Siddon-Jacobs), but I cannot verify this assumption since I can only observe a full registration step.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Is there a way to speed up the process? Unfortunately the custom classes that were implemented in this module do not come with many useful tools such as a Sampling Strategy.<br>
<br>
Thanks to anyone contributing<o:p></o:p></span></p>
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