Hello,
- To perform registration, 4 or 5 points should be OK. The more points the
worse... All points should not be in the same plane, and distributed all
over the model.
- The model always should be fixed during registration. If you are taking
points with the calibrated pointer it should be OK. While taking the points
the rigid body of the NDI Polaris should be visible to the camera of
course, to be able to track the positions.
- It is not neccesary to add your stl model or your calibration files in
MITK to use when building the application. You can create a customize Tool
Storage in the Navigation Tool Manager Plugin
<http://docs.mitk.org/2015.05/org_mitk_views_igtnavigationtoolmanager.html>.
And then you can acces it from the IGT Tracking Toolbox (in Load Tool).
I hope I help a little bit!
What I haven't figured out yet is how to manage the registration
tranformation (result of the registration). You can apply the
transformation only to that object pressing the "Register (object is
moved)" button. How to see its values or how to apply it to other objects??
And where can we see the registration error? Are MITK people working on it?
Thanks a lot in advance.
Bests,
2017-12-11 21:50 GMT+01:00 emetss <[email protected]>:
> I have a question regarding the tracking with model and pointer. I have an
> stl and rom(calibration) files for the model and pointer. I want that when
> passing the tooltip of the pointer on the model, then the mitk shows them
> correctly. I tried doing the registration of the stl file to the
> calibration
> file.
> I've tried IGT Example Tracking Lab, and IGT Fiducial Registration and I
> get
> registration points (18 in my case). It shows the tracking between the
> pointer ToolTip and the model for some points (skull in my case). But it's
> still not correct. It shows only two points near the markers as correct. I
> tried with more registration points (up to 34) but still have no results.
>
> I have a model (skull) which is a multi-faced model in my case, and a
> pointer. I have three markers positioned in one face of the model, but I
> have registration points allocated on different faces on the model. Is it
> enough to have markers only on one face of the model?
>
> Am I doing the registration correctly? I mean when passing the pointer on
> the registration points on the skull and do "add current instrument
> position", should the pointer be in a specific direction to the camera? And
> should the model be during this process fixed? I have to move it because as
> said the registration points are allocated on all the surfaces of the
> skull.
>
> when passing the pointer on the multi-faced skull and while the NDI Polaris
> camera is tracking them correctly then the mitk should show the model and
> the pointer as they are but It doesn't.
>
> I also drew the stl of my pointer and i have an stl model of the skull and
> I
> use them with calibration files in the IGT Tracking Toolbox. Should i put
> these models in the igt tracking package of MIT or somewhere when building
> the mitk?
>
> What is your advice. I'm really thankfull for your help and your support
>
>
>
> --
> Sent from: http://mitk-users.1123740.n5.nabble.com/
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> mitk-users mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/mitk-users
>
--
Rocío López Velazco
*SimbioSYS** group, BCN MedTech*
*UniversityPompeu Fabra*
*Department of Information and Communication Technologies Roc Boronat, 122
(Tànger Building), 08018 Barcelona Office 55 119
https://bcn-medtech.upf.edu/ <https://bcn-medtech.upf.edu/>*
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
mitk-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/mitk-users
