Hello Richard, thank you very much again for your replies ! > - Richard Atterer here : http://atterer.net/leadme ; > > I just extended that page with pictures of the hardware I built for indoor > mapping, and a screenshot of the map editor I'm developing. >
Richard ! Your mapping mouse (a walkable path recorder :-) ) looks amazing and funny to use ! So you've taken two quake-gaming mice and consider using a proximity probe, a compass and HD webcam... (I used my german-english dictionaries & some old skills :-) ) I've pasted a link for your project on the Indoor mapping osm wiki page in the Projects > Around OpenStreetMap section http://wiki.openstreetmap.org/wiki/Indoor_mapping#Around_OpenStreetMap Jonathan-David Schröder On Wed, Dec 16, 2009 at 10:39 PM, Richard Atterer <[email protected]>wrote: > Hello, > > thanks for CCing me, Jonathan-David! It's great to see other people are > interested in indoor navigation! I just subscribed to the dev list. > > On Wed, Dec 16, 2009 at 10:50:01AM +0100, Jonathan-David SCHRODER wrote: > > Outside of openstreetmap's site, we have found several people mentioning > the > > topic of indoor geopositioning : > > - Richard Atterer here : http://atterer.net/leadme ; > > I just extended that page with pictures of the hardware I built for indoor > mapping, and a screenshot of the map editor I'm developing. > > (I should mention right now that my time to continue working on this is > very constrained in the nearer future. :~-| ) > > > - on mobile phones : use of Nutiteq's j2me maps library, or other > > android piece of open source software for example (osmdroid, opensatnav). > > Some code around those apps allows for more zoom levels & for > > threaded-background gathering of wifi beacons positions (stored in 2)'s > > database) so as to make triangulation calculation and to allow end-user > > searching of objects to display on top of map (what do you propose for > this > > overlaying ? Can the Web API reply to the queries with a KML group of > > features ?... we want to have features's URLs known and usable on the > mobile > > end). > > From what I gathered (from researchers working in this area), triangulation > in an indoor setting is problematic. Signals may be attenuated due to > walls, or may be reflected from walls, so it just does not work well. > > To get around this issue, my simple idea was to continuously record WiFi > beacons and their relative strength, and include many many samples in the > map - with every node, and possibly even in extra nodes created just to > carry that information. With a decent algorithm, this might give better > results than storing AP location info in the map. > > Cheers, > > Richard > > -- > __ , | ) /| Richard Atterer > | \/ | http://atterer.net > >
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