From jackfmoore at yahoo.com  Tue Feb 14 16:36:00 2017
From: jackfmoore at yahoo.com (Jack Foley Moore)
Date: Tue, 14 Feb 2017 16:36:00 -0500
Subject: [IGSTK-Users] Pivot Calibration
Message-ID: <B862ED3D-B2FE-456A-959B-F8DDB48F03A4@yahoo.com>

I?m currently trying to change our tool calibration method for a live imaging software, which uses the igstkPivotCalibrationFLTKWidget class, and I?m struggling to get an accurate pivot point because of the shape of the tool I?m using.
The tool isn?t shaped in an L shape, in which the tracker is attached to a roughly 6 inch tool where at the end the tip of the tool goes perpendicular to the tool and sticks out about another inch.  This is very different than the shape of the tool described in the IGSTK book in the example, and our final pivot point is usually off by about 2-3mm in the direction of the tracker.
Has anyone encountered this problem as well and found a solution?
Thank you,
Jack Moore

From zivrafael.yaniv at nih.gov  Wed Feb 15 14:16:38 2017
From: zivrafael.yaniv at nih.gov (Yaniv, Ziv Rafael (NIH/NLM/LHC) [C])
Date: Wed, 15 Feb 2017 19:16:38 +0000
Subject: [IGSTK-Users] Pivot Calibration
In-Reply-To: <B862ED3D-B2FE-456A-959B-F8DDB48F03A4@yahoo.com>
References: <B862ED3D-B2FE-456A-959B-F8DDB48F03A4@yahoo.com>
Message-ID: <D4CA10DC.E5EC%yanivz@mail.nih.gov>

Hello Jack,

For some tool shapes performing pivot calibration is simply hard because
of their physical shape and the position of the dynamic reference frame
(DRF) attached to the tool.

A potential solution assuming you have access to a high quality (accurate)
3D printer, if not there are online vendors who will print things out if
you send them an STL file:
0. You have the CAD description for your L shaped tool.
1. Design a wrapper which will exactly encase the L, and which creates a
temporary tool with a straight tip. You need to know the exact tip
location of your L inside the wrapper, this is from the CAD design.
2. Pivot calibrate the wrapped tool. You have the location of the
wrapper?s tip with respect the DRF and you know the location of the L?s
tip with respect to the wrapper?s tip from your CAD design. This gives you
the L?s tip with respect to the DRF.

    hope this helped
       Ziv




On 2/14/17, 4:36 PM, "Jack Foley Moore via IGSTK-Users"
<igstk-users at public.kitware.com> wrote:

>I?m currently trying to change our tool calibration method for a live
>imaging software, which uses the igstkPivotCalibrationFLTKWidget class,
>and I?m struggling to get an accurate pivot point because of the shape of
>the tool I?m using.
>The tool isn?t shaped in an L shape, in which the tracker is attached to
>a roughly 6 inch tool where at the end the tip of the tool goes
>perpendicular to the tool and sticks out about another inch.  This is
>very different than the shape of the tool described in the IGSTK book in
>the example, and our final pivot point is usually off by about 2-3mm in
>the direction of the tracker.
>Has anyone encountered this problem as well and found a solution?
>Thank you,
>Jack Moore
>_______________________________________________
>Powered by www.kitware.com
>
>Visit other Kitware open-source projects at
>http://www.kitware.com/opensource/opensource.html
>
>Follow this link to subscribe/unsubscribe:
>http://public.kitware.com/mailman/listinfo/igstk-users


From robotdm at gmail.com  Wed Feb 22 08:52:00 2017
From: robotdm at gmail.com (Hyungmin Kim)
Date: Wed, 22 Feb 2017 22:52:00 +0900
Subject: [IGSTK-Users] Anyone has experienced with converting between IGSTK
 ImageSpatialObject and ITK image?
Message-ID: <CAMSehgOdJZ=Vr2jPJXNzm1NUg=D0aXG+cQGfU6SrHG07kQALAg@mail.gmail.com>

Hi all,

I am trying to implement MR/CT volume registration in IGSTK framework.
In doing that, I managed to convert IGSTK ImageSpatialObject to ITK image
using image observer and GotITKImage function.
After that, I did volume registration calculation using ITK.
Then, I tried to apply the calculated transform to original IGSTK
ImageSpatialObject.
But when I applied the transform, the volume disappeared...

I guess there might be a mismatch between two coordinate systems (IGSTK,
ITK).
Is there anyone who had experienced this kind of issues?

Thanks in advance
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From xiaojieguo at sjtu.edu.cn  Fri Feb 24 03:25:57 2017
From: xiaojieguo at sjtu.edu.cn (=?gb2312?B?ufnP/r3c?=)
Date: Fri, 24 Feb 2017 16:25:57 +0800 (CST)
Subject: [IGSTK-Users] Finish igstkPivotCalibratioFLTKWidget in Qt
Message-ID: <1109507772.28958384.1487924757349.JavaMail.zimbra@sjtu.edu.cn>

Hi, everyone

   Did someone solve this problem ? 

   http://public.kitware.com/pipermail/igstk-users/2013-January/002876.html

   I also want to finish pivot calibration in Qt and I'm using the igstkPivotCalibratioFLTKWidget class as a guideline.

   I found the callback function has "Fl::check()", so the callback function can still process the event. But in 
Qt, I don't find a similiar function like it. Then the callback function can only run one time, no more events get.
Could anyone help me ? Thanks!

Xiaojie Guo

SJTU, Shanghai, China

From ozgur.guler.phd at gmail.com  Fri Feb 24 09:48:55 2017
From: ozgur.guler.phd at gmail.com (=?utf-8?B?w5Z6Z8O8ciBHw7xsZXI=?=)
Date: Fri, 24 Feb 2017 09:48:55 -0500
Subject: [IGSTK-Users] Finish igstkPivotCalibratioFLTKWidget in Qt
In-Reply-To: <1109507772.28958384.1487924757349.JavaMail.zimbra@sjtu.edu.cn>
References: <1109507772.28958384.1487924757349.JavaMail.zimbra@sjtu.edu.cn>
Message-ID: <E7BD38C4-C09F-4624-85A2-124A956254E7@gmail.com>

Hi Xiaojie Guo,

we implemented an open-source image-guided intervention (IGI) simulation tutorial which consists of several applications. The IGI bundle consists of several applications, which you can utilize for camera calibration, pivot calibration, digital 3D scanner, IGI navigation app etc. 

You can find the source code and additional information here:
http://yanivresearch.info/igiTutorial/igiTutorial.html <http://yanivresearch.info/igiTutorial/igiTutorial.html>

You can use the ?Pivot Calibration? app, which uses Qt as GUI, as is or take a look at the implementation, to solve you issue.

Best,
Ozgur


 
> On Feb 24, 2017, at 3:25 AM, ??? <xiaojieguo at sjtu.edu.cn> wrote:
> 
> Hi, everyone
> 
>   Did someone solve this problem ? 
> 
>   http://public.kitware.com/pipermail/igstk-users/2013-January/002876.html
> 
>   I also want to finish pivot calibration in Qt and I'm using the igstkPivotCalibratioFLTKWidget class as a guideline.
> 
>   I found the callback function has "Fl::check()", so the callback function can still process the event. But in 
> Qt, I don't find a similiar function like it. Then the callback function can only run one time, no more events get.
> Could anyone help me ? Thanks!
> 
> Xiaojie Guo
> 
> SJTU, Shanghai, China
> _______________________________________________
> Powered by www.kitware.com
> 
> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
> 
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/igstk-users

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