Hi, > > > The way they encode the QR code is public insofar that the source code > > to walking papers is FOSS. > > That isn't the patented technology. The algorithmn that is able to > calculated the orientation of the paper that is scanned and > re-orientate it (I have never scanned in a piece of paper exactly) is > patented by another individual, but the Walking Papers guys either > have explicit permission to use it or the owner allows non-commercial > use. > > If you know that the QR is always at bottom-right, it doesn't seem black magic to me.
Rectifying the image to correct scanning artefacts is another issue. But is perfect fit really necessary for hand drawn maps?
_______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
