[IGSTK-Users] IGSTK: Polaris and recorded images synchronization

[l khinwee]

Hi Patrick,

I found some examples program from the IGSTK sandbox 4.4 which doing the video 
frame grabbing, the folder i found from the examples are shown as below, but 
from your previous threads you said IGSTK have not finish this function in 
IGSTK?

VideoFrameGrabberAndViewer
VideoFrameGrabberAndViewerCompressedDV
VideoFrameGrabberAndViewerMicron
VideoFrameGrabberAndViewerOpenIGTLink
VideoFrameGrabberAndViewerWebcam
VideograbbingAndTrackingUsingQTWidget

Back to my question, what kind of video frame grabber (what brand/version ?) is 
need in order to cooperate with the examples above? If i can make this video 
grabbing working, is that possible i combine it together with the 
igstkPolarisTracker to perform the synchronization of images with their 
position? Please correct me if my understanding is wrong. Many thanks.

regards,
Lai




________________________________
From: Patrick Cheng <cheng at isis.georgetown.edu>
To: l khinwee <khinwee at yahoo.com>
Cc: igstk-users at public.kitware.com
Sent: Fri, February 25, 2011 5:31:00 PM
Subject: Re: [IGSTK-Users] IGSTK: Polaris and recorded images synchronization

Hi Lai,

What is the status of your video recording component? Unfortunately, we 
haven't quite finish that function in IGSTK at this moment, which means 
you can't do the whole application in IGSTK. We do have some draft code 
for testing purpose, if you are willing to jump on the beta.

But if you have that component developed independently already, then its 
relatively easy to integrate IGSTK tracking into your program. I can 
give you some guidance on that.

Let me know how I can best assist you,

Patrick

On 2/25/2011 11:11 AM, l khinwee wrote:
> HI Patrick,
>
> I have seen the link you given before. It is the software developed
> namely SynchroGrab4D, in the last few weeks, i have also contacted with
> David Gobbi, who are one of the author/developer for this software. The
> reason why i give up to implement this SynchroGrab4D, is because they
> are not using any video grabber/frame grabber, they using Ultrasonix (PC
> based ultrasound machine) so that they can have direct access of the
> computer memory to get the recording images. All the coding in this
> software are mixed with Ultrasonix coding. So, if i am not using this
> ultrasound machine, i cannot build the application successfully. I have
> tried to comment out the related coding from Ultrasonix, but it seems
> like far more complicated as i thought.
> However, this is the only example coding/software that are available
> online and related to vtkNDITracker, i could not find any more others
> examples, as more people working on tracking devices with IGSTK only,
> rather than VTK.
> Please correct me, if i am mistake.
>
> Lai
>
> ------------------------------------------------------------------------
> *From:* Patrick Cheng <cheng at isis.georgetown.edu>
> *To:* l khinwee <khinwee at yahoo.com>
> *Cc:* igstk-users at public.kitware.com
> *Sent:* Fri, February 25, 2011 10:56:23 PM
> *Subject:* Re: [IGSTK-Users] IGSTK: Polaris and recorded images
> synchronization
>
> Hi Lai,
>
> You might find this reference helpful:
> http://hdl.handle.net/10380/3083
>
> vtkNDITracker class is the precursor of igstk tracker code. If that
> tracking code works and you have your video recording working in VTK, I
> would recommend you do it in VTK.
>
> VideoGrabber component is currently under development, so there is no
> video recording capability in IGSTK yet. Once we have that, it will be
> relatively easy to do this in IGSTK.
>
> I hope this helps,
>
> Patrick
>
> On 2/25/2011 7:05 AM, l khinwee wrote:
>  > Hi All IGSTK Users,
>  >
>  > i have a question regarding IGSTK. I am trying to reconstruct 3D
>  > ultrasound images from a series of 2D images,and i have a Polaris
>  > Optical tracking devices working together with the ultrasound machine
>  > while recording the 2D image slices. My idea is to synchronize the
>  > position orientation with each of the recording 2D images, before
>  > further reconstruct into 3D.
>  >
>  > Can i using IGSTK for this works? I have go through some examples from
>  > IGSTK, such as NeedleBiopsy, Navigation and etc. But the examples is
>  > trying to navigate the needle(or Polaris Passive Marker) positions. Some
>  > how it is not the goal that i wish to achieve.
>  >
>  > I realize that there are a class vtkNDITracker.cxx from VTK. Should i
>  > focus on this vtk implementation, or trying the IGSTK. I have no idea
>  > which tools should i using. Please advise me, thank you very much.
>  >
>  > regards,
>  > Lai
>  >
>  >
>  >
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