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Hello...<BR>
I'm using a NDI Polaris tracking system.<BR>
I know that IGSTK is not supported for single markers tracking. Thats why i'm looking for another option.<BR>
I have a passive tool with three markers. With the tracking system i can get the position of one of the spheres, because the origin of the coordinate system is exactly in one sphere.<BR>
With this information i want to rebuild the position of the other two spheres. Graphically, I draw the other two spheres and set observers to each sphere. With this, i think i can get the transformations that correspond with the real reflective spheres.<BR>
Comparing the position returned by the observer of sphere 1 (origin of the coordinate) with the information of the tracking of the passive tool, this data math. Then i suppose that the other two positions returned by the observers for spheres 2 and 3 must match too, but its not true :( There are, in the best case, positions not corresponding with the coordinate system, they are transformated.<BR>
Then, i don't know if i'm using the data correctly. The information of a transform returned by the observer is the rotation (<FONT size=2>GetRotation</FONT>) and translation (<FONT size=2>GetTranslation</FONT>) or is the position and rotation.<BR>
How can i get the orientation of the tool??<BR>
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Regards,<BR>
Eric<BR>
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<BR>
Image Analysis And Visualization Laboratory<BR>Centro de Ciencias Aplicadas y Desarrollo Tecnologico CCADET UNAM<BR>Circuito Exterior S/N, Cd. Universitaria,<BR>AP 70-186, CP 04510 Mexico, DF<BR>Tel: +(52)(55) 56 22 86 02, ext. 1130<BR>
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*************************************************** <BR>> Date: Mon, 29 Jun 2009 10:17:09 -0400<BR>> From: zivy@isis.imac.georgetown.edu<BR>> To: eric_lb@hotmail.com<BR>> CC: igstk-users@public.kitware.com<BR>> Subject: Re: [IGSTK-Users] Tool positions or Tools Translations?<BR>> <BR>> Hi Eric,<BR>> <BR>> Which tracking system are you using?<BR>> <BR>> Currently, IGSTK does not support tracking of single markers <BR>> (MicronTracker's XPoint or NDI's reflective spheres). All tracked <BR>> objects consist of at least three points, with IGSTK sending the <BR>> relevant API commands to the tracker based on the assumption that we are <BR>> tracking a frame (coordinate system).<BR>> <BR>> regards<BR>> Ziv<BR>> <BR>> > -- <BR>> Ziv Yaniv, PhD., Research Assistant Professor<BR>> Imaging Science and Information Systems (ISIS) Center<BR>> Department of Radiology<BR>> Georgetown University Medical Center<BR>> 2115 Wisconsin Avenue, Suite 603<BR>> Washington, DC, 20007,<BR>> <BR>> Phone: +1-202-687-7286<BR>> Fax: +1-202-784-3479<BR>> email: zivy@isis.georgetown.edu<BR>> web: http://isiswiki.georgetown.edu/zivy/<BR>> > > ------------------------------------------------------------------------<BR>> > <BR>> > _______________________________________________<BR>> > Powered by www.kitware.com<BR>> > <BR>> > Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html<BR>> > <BR>> > Follow this link to subscribe/unsubscribe:<BR>> > http://public.kitware.com/cgi-bin/mailman/listinfo/igstk-users<BR>> <BR>> <BR><br /><hr />Conoce el reto de esta semana y <a href='http://www.actualizatuperfil.com.mx/' target='_new'>y gana con Perfil de Windows Live</a></body>
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