Difference between revisions of "Fiducial Markers"
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* [[Image:QR-code.png|100px]] [http://en.wikipedia.org/wiki/QR_code QR-code (Quick Response Code)] (wikipedia.org) | * [[Image:QR-code.png|100px]] [http://en.wikipedia.org/wiki/QR_code QR-code (Quick Response Code)] (wikipedia.org) | ||
* [[Image:ARtag.png|100px]] [http://en.wikipedia.org/wiki/ARTag ARTag (Augmented Reality Tag)] (wikipedia.org) | * [[Image:ARtag.png|100px]] [http://en.wikipedia.org/wiki/ARTag ARTag (Augmented Reality Tag)] (wikipedia.org) | ||
| − | * [[Image:reacTIVision.png|100px]] [ Fiducial Marker] (wikipedia.org) | + | * [[Image:reacTIVision.png|100px]] [http://en.wikipedia.org/wiki/Fiduciary_marker Fiducial Marker] (wikipedia.org) |
| Line 34: | Line 34: | ||
* [http://reactivision.sourceforge.net/ reacTIVision] project page (sourceforge.net) | * [http://reactivision.sourceforge.net/ reacTIVision] project page (sourceforge.net) | ||
* [http://code.google.com/p/fidgen/ fidgen] -- fiducial markers generator (code.google.com) | * [http://code.google.com/p/fidgen/ fidgen] -- fiducial markers generator (code.google.com) | ||
| + | |||
| + | == Experiments == | ||
| + | |||
| + | |||
| + | === ReacTIVision === | ||
| + | |||
| + | |||
| + | USB Camera 352 x 288 / 15fps used. | ||
| + | reacTIVision for windows binary 1.4. | ||
| + | |||
| + | Basic recognition works quite well | ||
| + | |||
| + | [[Image:Experiment1.png]] | ||
| + | |||
| + | Also partially hidden image is recognized | ||
| + | |||
| + | [[Image:Experiment2.png]] | ||
| + | |||
| + | But sometimes even larger one is not | ||
| + | |||
| + | [[Image:Experiment3.png]] | ||
| + | |||
| + | Smalest image recognized properly | ||
| + | |||
| + | [[Image:Experiment4.png]] | ||
| + | |||
| + | In larger distance, image is too small to identify | ||
| + | |||
| + | [[Image:Experiment5.png]] | ||
| + | |||
| + | |||
| + | |||
| + | === QR code === | ||
| + | |||
| + | Even the simpe QR code containg less than 10 ASCI letters is not recognized: | ||
| + | |||
| + | [[Image:Experiment7.png]] | ||
| + | |||
| + | Could not find any barcode in the uploaded image. | ||
Latest revision as of 12:44, 19 December 2012
Overview
An overview article:
- Mark Fiala: Designing highly reliable fiducial markers. Pattern Analysis and Machine Intelligence, IEEE Transactions on 32 (7), 1317...
Interesting just for me:
Markers overviwew
-
QR-code (Quick Response Code) (wikipedia.org) -
ARTag (Augmented Reality Tag) (wikipedia.org) -
Fiducial Marker (wikipedia.org)
Software
ARtag
- ARtag basic overview
- ARtag slides
- ARToolKit
reacTIVision
- reacTIVision project page (sourceforge.net)
- fidgen -- fiducial markers generator (code.google.com)
Experiments
ReacTIVision
USB Camera 352 x 288 / 15fps used. reacTIVision for windows binary 1.4.
Basic recognition works quite well
Also partially hidden image is recognized
But sometimes even larger one is not
Smalest image recognized properly
In larger distance, image is too small to identify
QR code
Even the simpe QR code containg less than 10 ASCI letters is not recognized:
Could not find any barcode in the uploaded image.
