Hi, Anka Kochanowska:<br><br>I try to use vtkLandmarkTransform to make a registration, but there is a problem on the number of points from two point clouds, because the number of points from vtkConeSource is differenct from the number of polygonal points in extracted surface of 3D ultrasound data. So I try vtkIterativeClosestPointTransform method, but I am afraid the number of points from vtkConeSource is so small that the registration result is not correct. <br>
<br>Do you have any idea on how to get much more points from vtkConeSource ? I found the number of points from one cone source is equal to setup number of resolution. If I want to obtain much more points on inclined plane from vertex to bottom circle, is there any method ? Or do anyone have any advice on my problem ?<br>
<br>Thank you!<br><br><div class="gmail_quote">2012/5/9 Rong Xu <span dir="ltr"><<a href="mailto:xurong1981@gmail.com" target="_blank">xurong1981@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Thank you very much for your very useful advice !<br><br>I have tried vtkAppendPolyData to merge 12 vtkConeSource as one polydata successfully. Besied, for registration, I will try vtkLandmarkTransform to realize it.<br>
<br>
Realy appreciate your help!<br><br>Best Wishes!<div><div><br><br><div class="gmail_quote">2012/5/9 Anka Kochanowska <span dir="ltr"><<a href="mailto:pluszcz@gmail.com" target="_blank">pluszcz@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
For registration you could look at vtkLandmarkTransform.<span><font color="#888888"><div>Anka</div></font></span><div><br><br><div class="gmail_quote"><div>On Wed, May 9, 2012 at 9:12 AM, Rong Xu <span dir="ltr"><<a href="mailto:xurong1981@gmail.com" target="_blank">xurong1981@gmail.com</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>Dear Everyone :<br><br>In my project, I construct a physical phantom composing of 12 plastic cones. I used a 3D ultrasound probe to scan this phantom and got its 3D ultrasound image. In order to find each tip of 12 cones in 3D ultrasound image, I want to construct a VTK model of 12 cones by vtkConeSource, and I can arrange 12 cones on different positions by different vtkActor for each cone, but I don't know which source or data type to save these 12 cones as one object. Because I want to use these 12 cones as one object to register extracted surface of 12 cones in 3D ultrasound image. Do anyone have ideas about combining 12 vtkConeSource as one object ? Also do you have any ideas about the registration between this one object and the extracted surface of 12 cones in 3D ultrasound image ?<br>
<br>Thank you very much for your advice!<br clear="all"><br>-- <br><br> ---------------------<br>Best Regards!<br><br>===============================================<br>Rong Xu, Ph.D Student<br>Ohya Lab<br>Graduate School of Global Information
and Telecommunication<br>Studies (GITS), Waseda University<br>1-6-1 Nishi Waseda, Shinjuku-ku,
Tokyo, Japan (¨“169-8050)<br><br>Tel: <a href="tel:%2B81-80-4208-1207" value="+818042081207" target="_blank">+81-80-4208-1207</a><br>E-mail: <a href="mailto:xurong1981@gmail.com" target="_blank">xurong1981@gmail.com</a><br>
<a href="mailto:xurong@fuji.waseda.jp" target="_blank">xurong@fuji.waseda.jp</a><br>
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</blockquote></div><br><br clear="all"><br>-- <br><br> ---------------------<br>Best Regards!<br><br>===============================================<br>Rong Xu, Ph.D Student<br>Ohya Lab<br>Graduate School of Global Information
and Telecommunication<br>Studies (GITS), Waseda University<br>1-6-1 Nishi Waseda, Shinjuku-ku,
Tokyo, Japan (¨“169-8050)<br><br>Tel: <a href="tel:%2B81-80-4208-1207" value="+818042081207" target="_blank">+81-80-4208-1207</a><br>E-mail: <a href="mailto:xurong1981@gmail.com" target="_blank">xurong1981@gmail.com</a><br>
<a href="mailto:xurong@fuji.waseda.jp" target="_blank">xurong@fuji.waseda.jp</a><br>
===============================================<br><br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br><br> ---------------------<br>Best Regards!<br><br>===============================================<br>Rong Xu, Ph.D Student<br>Ohya Lab<br>Graduate School of Global Information
and Telecommunication<br>Studies (GITS), Waseda University<br>1-6-1 Nishi Waseda, Shinjuku-ku,
Tokyo, Japan (¨“169-8050)<br><br>Tel: <a href="tel:%2B81-80-4208-1207" value="+818042081207" target="_blank">+81-80-4208-1207</a><br>E-mail: <a href="mailto:xurong1981@gmail.com" target="_blank">xurong1981@gmail.com</a><br>
<a href="mailto:xurong@fuji.waseda.jp" target="_blank">xurong@fuji.waseda.jp</a><br>
===============================================<br><br>