You can either clip based on a view frustrum, or using nearness constraints after manually correcting for the rotation. Either should work. Make sure you turn off the initial alignment of centroids on the PCA.<div><br></div>
<div>- Wes<br><br><div class="gmail_quote">On Fri, Mar 4, 2011 at 11:30 AM, nuno.jf <span dir="ltr"><<a href="mailto:nunofernandes7@gmail.com">nunofernandes7@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hi Wes,<br>
<br>
Thank you very much for you message. My problem is that I don't know much<br>
about ICP parameters and I don't know how to feed ICP only with the points<br>
in the overlap region of both point clouds. Is there a basic way of doing<br>
this?<br>
Best regards,<br>
<div class="im">Nuno<br>
<br>
For ICP, the issue is that every point you choose for the source point set<br>
will feed into the calculation of the metric. If the clouds represent<br>
different sections of the same part, and you choose points outside of the<br>
overlap region, then the alignment will tend to increase the area of<br>
overlap. Since you seem to have a good initial set for the alignment, I<br>
would use this initial guess to estimate the area of overlap and then only<br>
choose points from the source set that lie within that region.<br>
<br>
- Wes<br>
<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Wesley D. Turner, Ph.D.<br>Kitware, Inc.<br>Technical Leader<br>28 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: 518-881-4920<br>
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