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This is my first attempt for rebuilding some 3d space with automatic tracking.
I used a slightly modified version of the software robots.ox.ac.uk/~gk/PTAM/ to do the tracking en then save the map as an xml. The xml was then used in openframework to do the rendering in opengl.
I hope to have better results by tweaking PTAM. Will try the same process in a bigger environment next time.