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    <p>I'm answering this so anyone stumbling across this problem / question doesn't have to do the same research I did.</p> <p>Apparently, accessing and processing a single image doesn't quite fit the definition of augmented reality. There is another keyword for this which I already forgot (sorry), but in case you want to use google you should not focus on AR-related software only.</p> <p>To solve my issue I used two approaches. The first one was to use the ARToolKit together with gstreamer and ffmpeg. I transformed my single-image into one second of video with ffmpeg, exported the ARTOOLKIT_CONFIG string and then rendered the image with ARToolKit. This wasn't really great as this is very limited and I can't really get the rendered image back to me without parsing the artoolkit-opengl output.</p> <p>My second approach however satisfied me very much: I used the OpenCV-Library to detect a marker. An example for something like that can be found here: <a href="http://dasl.mem.drexel.edu/~noahKuntz/openCVTut10.html" rel="nofollow noreferrer">http://dasl.mem.drexel.edu/~noahKuntz/openCVTut10.html</a> I then exported the recognized camera-parameters and transformed them to fit the matrix's used by the Irrlich-Engine (I also tried Ogre but Irrlicht seemed nicer to me) and then rendered my object with it onto the image. I can then obtain the final result with Irrlicht's transformDataToImage() function.</p> <p>The only downside is I have to have an X-Server running to get the rendered picture but I can live with that.</p> <p>Ps: Don't try this with the square marker found in the tutorial I mentioned above. It isn't possible to detect the exact rotation of the marker out of obvious reasons. </p>
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    1. COI would really appreciate it if you could point out how you transformed the camera parameters to fit Irrlicht's matrices. How would you construct the projective matrix (used in `camera->setProjectionMatrix()`) considering the fact that Irrlicht uses a left-handed coordinate system? Thanks.
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      1. USDragos Stanciu
 

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