[vtkusers] SynchroGrab4D, vtk Polaris tracking

[David Gobbi]

Hi Tom,

A couple things to watch out for:

1) SynchroGrab was originally written for use with the Optotrak
Certus, so you will have to go through the code and replace any
instances of "vtkNDICertusTracker" with "vtkNDITracker".  The latter
is the class that works with the Polaris.

2) Read vtkNDITracker.h for info on how to set up the tracker, e.g.

tracker->SetSerialDevice("COM6:");
tracker->LoadVirtualSROM(3, "/path/to/srom/file");
tracker->Probe();

The vtkNDITracker class uses ports 0,1,2 for wired tools and 3,4,5,etc
for passive tools, so if you are using only passive tools, make sure
that you only use ports that are 3 or higher.

 - David


On Mon, Jul 18, 2011 at 1:03 PM, Tom Pheiffer
<thomas.s.pheiffer at vanderbilt.edu> wrote:
> Hi VTK users,
>
> I'm currently interested in creating a 3D ultrasound image volume from a
> series of tracked freehand 2D images. To do this, I'm using a Polaris
> Spectra with passive tracking, and an NDI target attached to the ultrasound
> transducer. I stumbled upon this paper by Danielle Pace et al, describing an
> open-source program called SynchroGrab4D, which appears to do everything I
> want:
>
> http://www.midasjournal.org/browse/publication/655
>
> I've been able to compile 3D Slicer and SynchroGrab just fine, and it runs
> on "Fake" tracking and image data with no problems. However, when I try to
> get it to connect to my Polaris, it cannot find the tracking system. I
> haven't been able to figure out what's going on in the vtk tracking code
> that is giving me trouble. Is there anyone out there that has used this
> code, or any of the Atamai tracking code (much of which appears to be
> written by David Gobbi)? I should mention that I'm trying to do this in a
> 32-bit Windows 7 environment.
>
> Any help is appreciated,
>
> -Tom