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

[l khinwee]

Hi Özgür,

Many thanks for your suggestion.

I have go through all the examples available, but mostly are not applicable 
because of Linux OS system required. I am using Window7 currently. However, i 
managed to compile the VideoFrameGrabberAndViewerOpenIGTLink, it works fine 
although i haven't test with USG machine connection, my question is that the 
network cable Rj41 is the same as LAN / Ethernet cable? For OpenIGTLink 
connection, why i need two computers? Can i connect the LAN cable both ended 
directly at USG machine and Computer? or i must have any other converter?

Second question, I have HDMI (high definition multimedia interface) connector on 
my laptop. Is this kind of connector consider as one of the firewire cable ? If 
yes, is that possible for me to run  igstkImagingSourceImager/Tool under Window 
7 instead of Linux OS system?

Thank you for your time and suggestion.


best regards,
Lai







________________________________
From: Özgür Güler <ozgur.guler.phd at gmail.com>
To: l khinwee <khinwee at yahoo.com>
Cc: Patrick Cheng <cheng at isis.georgetown.edu>; igstk-users at public.kitware.com
Sent: Wed, March 16, 2011 6:37:31 PM
Subject: Re: [IGSTK-Users] IGSTK: Polaris and recorded images synchronization

hi Lai,

no, unfortunately you can not use the webcam implementation, 
but

1) currently the igstkCompressedDVImager/Tool works in Linux over firewire.
i.e. if you can connect your US machine to a videograbber/converter and the 
videograbber/converter to your PC over firewire then it will work (prerequisite: 
uncompressed DV format) 

2) there is also a igstkImagingSourceImager/Tool which works with this converter
http://www.theimagingsource.com/de_DE/products/converters/dfgusb2lt/ (firewire 
version)
you can connect your US machine over Composite Video, S-Video to the converter 
and connect the converter with firewire to your PS.

3)You can also use two PCs, one is connected to the US device and grabs the 
videoframes and sends the videoframes using the openIGTLink protocol. The second 
PC which is connected with a network cable (RJ-41) to the image sending PC uses 
igstkOpenIGTLingkImager/Tool to receive the images.

4)Build your own igstk_XXX_Imager/Tool, which is not that hard at all.

regards,
Özgür

 



2011/3/16 l khinwee <khinwee at yahoo.com>

hi Özgür,
>
>thank you for your suggestion.
>
>But I am not using any webcam to recording the images frames, i am using a video 
>frame grabber (USB to computer in window, TV port connect to Ultrasound 
>machine's TV port connection). So it this still can be done by using the classes 
>below? Or other option?
>
>/Source/igstkWebcamWinImager.cxx
>/Source/igstkWebcamWinImager.h
>/Source/igstkWebcamWinImagerTool.cxx
>/Source/igstkWebcamWinImagerTool.h
>Thank you.
>
>regards,
>Lai
>
>
>
>
________________________________
From: Özgür Güler  <ozgur.guler.phd at gmail.com>
>To: l khinwee <khinwee at yahoo.com>
>Cc: Patrick Cheng <cheng at isis.georgetown.edu>; igstk-users at public.kitware.com
>Sent: Tue, March 15, 2011 5:26:05 PM
>
>Subject: Re: [IGSTK-Users] IGSTK: Polaris and recorded images synchronization
>
>
>
>hi Lai,
>you can find usefull information here: 
>http://public.kitware.com/IGSTKWIKI/index.php/VideoGrabber_classes
>there is only one stable implementation of the videoimager working with a 
>standard webcam using opencv's interface in IGSTK.
>In IGSTKSandbox you will find more examples working with compressed DV 
>(endoscope, camcorder), Terason Ultrasound, openIGTLink, imaging source video 
>grabber. 
>
>Currently I am dealing with image to position synchronization too using polaris 
>and an endoscope over firewire in linux. 
>
>I hope this helps,
>regards,
>Özgür
>Am 15.03.2011 14:40 schrieb "l khinwee" <khinwee at yahoo.com>:
>
>


-- 

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Dipl.-Ing. Özgür Güler, MSc.
Research Assistant
4D-Visualization Laboratory
Univ. ENT Clinic
Innsbruck Medical University
Anichstr. 35, A-6020 Innsbruck, Austria

tel.: +43 512 504 23428, fax.: +43 512 504 25231

voxelmaster.eu
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