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</o:shapelayout></xml><![endif]--></head><body lang=ES link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-GB>Dear ITK Users,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>I have a registration problem which receives two different inputs:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>+ A point set (without normals)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>+ A geometrical model formed by basic bodies, mostly planes and cylinders<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>I would like to solve this problem using a variant of the Iterative Closest Point (ICP) algorithm, in which the closest points on the model's surface were computed analytically, using the equations describing the planes and cylinders. I know that ITK supports point sets and that basic geometric bodies can be represented as spatial objects. However, I was wondering if ITK currently includes a registration of this kind, that is, a PointSetToSpatialObjectRegistrationMethod.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>I know that this issue appeared previously on this list in 2004:<o:p></o:p></span></p><p class=MsoNormal><a href="http://public.kitware.com/pipermail/insight-users/2004-October/010646.html">http://public.kitware.com/pipermail/insight-users/2004-October/010646.html</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>…and that ITK has already a class that implements a point set to spatial object registration:<o:p></o:p></p><p class=MsoNormal><a href="http://www.itk.org/Doxygen44/html/classitk_1_1PointSetToSpatialObjectDemonsRegistration.html">http://www.itk.org/Doxygen44/html/classitk_1_1PointSetToSpatialObjectDemonsRegistration.html</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>…which does not seem to do much work (in fact, it only has its constructor and PrintSelf methods implemented).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is it possible to do this type of registration in ITK? As long as possible, I would like to avoid converting my geometrical data into a second point set.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance for your valuable help!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards,<o:p></o:p></p><p class=MsoNormal>Álvaro Bertelsen<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>