You should probably take note of the NL / OpenStreetPhoto guys' efforts to do SIFT on streetsigns. It isn't as simple as you might think.
One thing I will say though is you might get better results looking at the Affine SIFT (ASIFT) algorithm instead. http://www.cmap.polytechnique.fr/~yu/research/ASIFT/demo.html robert. On Friday 03 April 2009, Tijs Zwinkels wrote: > So, I've decided to take on this project. :) > I'm currently writing my proposal, which I'll post to the wiki and submit > at the GSoC site in 1 ~ 2 hrs time. (let me know if you want to see the > intermediate versions, I can just post to the wiki whatever I have already) > > Just bouncing a few last ideas, mainly to define the scope of the project: > - I've decided to focus on the automatic reading of street signs, and not > specificly on the recognition of other items in the environment. However, > one of the most challenging parts of this project is to segment > street-signs from images succesfully, and I'll be using SIFT (among other > things) for that. I fully expect the toolset that I develop to be very > useful in recognizing other objects as well. > - Since street-signs look differently in different parts of the world, for > now I'll just try to automatically read dutch street-signs. I think this > will give me enough variance to struggle with for now. :) - ofcourse, it > shouldn't be hard to adapt this work to foreign street signs. > - There is a large difference between whether the software should be able > to catch and read street signs that just happen to be in a picture, or > whether people took a picture with the intention of capturing a street > sign. (by which we would view the sign from a relatively straight angle > with a reasonably high resolution, not too much reflection, etc) > For now I'll assume the latter case. If the performance is reasonable, we > can always scale up to the more difficult cases. > > - Tijs Zwinkels _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
