TEM vision software

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As part of the [[Nanorobotics]] project a [[TEM vision software]] was developed. The software makes use of a [http://www.jeolusa.com/PRODUCTS/ElectronOptics/TransmissionElectronMicroscopesTEM/300kV/JEM3010/tabid/213/Default.aspx JEOL 3010] transmission electron microscope with a [http://tvips.com/Prod_F114.php TVIPS FastScan-F114 camera] which is an IIDC/DCAM-compatible firewire camera. The nano-indenter is controlled by a [http://web.nanomagnetics-inst.com/product_detail.php?product_link=SPM Nanomagnetics SPM controller] (the old version of the controller can be accessed with a [http://www.mccdaq.com/pci-data-acquisition/PCI-DIO24.aspx PCI-DIO24 card]).
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As part of the '''[[Nanorobotics|Nanorobotics project]]''' a [[TEM vision software]] was developed. The software makes use of a [http://www.jeolusa.com/PRODUCTS/ElectronOptics/TransmissionElectronMicroscopesTEM/300kV/JEM3010/tabid/213/Default.aspx JEOL 3010] transmission electron microscope with a [http://tvips.com/Prod_F114.php TVIPS FastScan-F114 camera] which is an IIDC/DCAM-compatible firewire camera. The nano-indenter is controlled by a [http://web.nanomagnetics-inst.com/product_detail.php?product_link=SPM Nanomagnetics SPM controller] (the old version of the controller can be accessed with a [http://www.mccdaq.com/pci-data-acquisition/PCI-DIO24.aspx PCI-DIO24 card]).
  
 
The software runs under GNU/Linux and it makes use of [http://damien.douxchamps.net/ieee1394/libdc1394/ Damien Douxchamps' libdc1394] to access the camera and [ftp://lx10.tx.ncsu.edu/pub/Linux/drivers/ Warren Jasper's PCI-DIO24 driver] to access the PCI-card which interfaces with the SPM controller.
 
The software runs under GNU/Linux and it makes use of [http://damien.douxchamps.net/ieee1394/libdc1394/ Damien Douxchamps' libdc1394] to access the camera and [ftp://lx10.tx.ncsu.edu/pub/Linux/drivers/ Warren Jasper's PCI-DIO24 driver] to access the PCI-card which interfaces with the SPM controller.
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            value="file=http://vision.eng.shu.ac.uk/jan/flv/tem.xml&amp;shuffle=false&amp;searchbar=false&amp;displayheight=418" />
       <div class="thumbcaption" >Demonstration of <b>TEM vision software</b> including telemanipulation as well as closed-loop control using machine-vision feedback (also available as DivX3 videos <a href="http://vision.eng.shu.ac.uk/jan/configuration.avi">configuration.avi (64 MByte)</a>, <a href="http://vision.eng.shu.ac.uk/jan/closed-loop.avi">closed-loop.avi (44 MByte)</a>, and <a href="http://vision.eng.shu.ac.uk/jan/interaction.avi">interaction.avi (19 MByte)</a>)</div></div></div></center></html>
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    <div class="thumbcaption">Demonstration of <b>TEM vision software</b> including telemanipulation as well as closed-loop control using machine-vision feedback (also available as DivX3 videos <a href="http://vision.eng.shu.ac.uk/jan/configuration.avi">configuration.avi (64 MByte)</a>, <a href="http://vision.eng.shu.ac.uk/jan/closed-loop.avi">closed-loop.avi (44 MByte)</a>, and <a href="http://vision.eng.shu.ac.uk/jan/interaction.avi">interaction.avi (19 MByte)</a>)</div></div></div></html>
 
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==Download==
 
==Download==
 
The software can be downloaded here: '''[http://vision.eng.shu.ac.uk/jan/visiongui-0.2.tar.bz2 visiongui-0.2.tar.bz2]'''
 
The software can be downloaded here: '''[http://vision.eng.shu.ac.uk/jan/visiongui-0.2.tar.bz2 visiongui-0.2.tar.bz2]'''
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The software is implemented in [http://www.ruby-lang.org/ Ruby]. It uses [[HornetsEye]] (current development of version 0.32) and [http://rubyforge.org/projects/korundum/ Qt4-QtRuby].
  
 
==Future Work==
 
==Future Work==
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* [[Nanorobotics]]
 
* [[Nanorobotics]]
 
* [[HornetsEye]]
 
* [[HornetsEye]]
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* [[Microscope Control Software]]
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* [[Microscope Vision Software]]
  
 
=External Links=
 
=External Links=
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** J. P. Lewis: [http://www.idiom.com/~zilla/Work/nvisionInterface/nip.html Fast Normalized Cross-Correlation], Industrial Light & Magic
 
** J. P. Lewis: [http://www.idiom.com/~zilla/Work/nvisionInterface/nip.html Fast Normalized Cross-Correlation], Industrial Light & Magic
 
** S. Baker, I. Matthews: [http://www.ri.cmu.edu/pub_files/pub3/baker_simon_2004_1/baker_simon_2004_1.pdf Lucas-Kanade 20 Years On: A Unifying Framework], International Journal of Computer Vision, Vol. 56, No. 3, March, 2004, pp. 221-255.
 
** S. Baker, I. Matthews: [http://www.ri.cmu.edu/pub_files/pub3/baker_simon_2004_1/baker_simon_2004_1.pdf Lucas-Kanade 20 Years On: A Unifying Framework], International Journal of Computer Vision, Vol. 56, No. 3, March, 2004, pp. 221-255.
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{{Addthis}}
  
 
[[Category:Projects]]
 
[[Category:Projects]]
 
[[Category:Nanorobotics|*Nanorobotics]]
 
[[Category:Nanorobotics|*Nanorobotics]]

Latest revision as of 14:08, 10 June 2010

Prototype using Distributed Ruby for vision-based closed-loop control
Moving the tip using "drag-and-drop" without vision feedback. The circle marks the initial position of the mouse-cursor
Here vision-based closed-loop control is used to control the position of the tip. The cross-and-circle marks the last known position of the nano-indenter. The cross marks the current nominal position

As part of the Nanorobotics project a TEM vision software was developed. The software makes use of a JEOL 3010 transmission electron microscope with a TVIPS FastScan-F114 camera which is an IIDC/DCAM-compatible firewire camera. The nano-indenter is controlled by a Nanomagnetics SPM controller (the old version of the controller can be accessed with a PCI-DIO24 card).

The software runs under GNU/Linux and it makes use of Damien Douxchamps' libdc1394 to access the camera and Warren Jasper's PCI-DIO24 driver to access the PCI-card which interfaces with the SPM controller.

The software was implemented in Ruby using Qt4-QtRuby, HornetsEye, libJIT, and a custom Ruby-extension to access the SPM controller via the PCI-DIO24 card. Distributed Ruby and multiple processes were used to work around the problem that Ruby-1.8 does not offer native threads.

The vision algorithms are configured using a separate program and the configuration is saved in a file using Ruby marshalling. A plugin-based architecture, which accepts plugins for recognition and tracking, was implemented which allows one to select and configure Normalised Cross-Correlation, Lucas-Kanade tracking, or Connected Component Analysis.

Contents

[edit] Demonstration

[edit] Videos

Demonstration of TEM vision software including telemanipulation as well as closed-loop control using machine-vision feedback (also available as DivX3 videos configuration.avi (64 MByte), closed-loop.avi (44 MByte), and interaction.avi (19 MByte))

[edit] Setup procedure

1. The vision algorithms are configured
2. The SPM axes are calibrated against the camera image. A fourth step compensates for linear drift occurring during calibration
3. Using closed-loop control the nano-indenter is moved along a linear path

[edit] Download

The software can be downloaded here: visiongui-0.2.tar.bz2

The software is implemented in Ruby. It uses HornetsEye (current development of version 0.32) and Qt4-QtRuby.

[edit] Future Work

Possible future work is

  • port to Ruby-1.9 which has native threads
  • integrate serial-port interface of JEOL TEM
  • access USB-controls for shutter and gain of the TVIPS camera
  • feature-based recognition and tracking (less sensitive to brightness changes)
  • offset- and gain-compensation for camera image

[edit] See Also

[edit] External Links

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