Hi Stefan I believe that there is enough infrastructure already in X3D to execute a good AR application. Metaio, in Munich, may be the largest AR company... they already use X3D. It would be good to get them in the discussion to learn about what they have experienced. (I have cc'd their biz dev person Irina)
I think that a good next step would be to build a quick reference implementation and share that with this list to see what they think. I have been meaning to do this but have been diverted by a short vacation. It would look something like this: 1. Map a video source to the X3D background node using the video as a texture. There are several ways to do this but one easy way is to use BitManagement's support for web cam video as a texture. 2. Tie a digital compass bearing to the texture mapping coordinates used in the background video. Also, use accelerometer output for tilting the camera viewpoint up and down. 3. Use The Network Sensor None (listener) or other similar mechanism to pull the lat / long from a NEMA string coming from a GPS device. This would be bound to the camera viewpoint node so that a person's movements would move the camera. 4. Use geo-registered 3D objects and 2D objects mapped to billboards These objects would be appear superimposed over the video source and would be correctly positioned geographically. Clicking on these objects could launch html pages or 2D overlay screens. That's it! Anyone game to give it a try? David Colleen Planet 9 -----Original Message----- From: Stefan Keller [mailto:[email protected]] Sent: Tuesday, September 08, 2009 2:22 AM To: David Colleen Cc: Mike Liebhold; [email protected] Subject: Re: [Geowanking] simple 3D geocode for AR David, Mike Interesting discussion Mike launched about AR viewfinders trends and now 3D geodata encoding. I'd like to come back to the initial question about simple 3D geocoding (having sorted out 3D coordinate encoding and CRS issues): >From what I realized there is X3D (inc. a geocoding service spec.?) and there is for sure also an OGC spec. or discussion paper around for geocoding (OpenLS, Geocoder, WPS profile?). Aren't they enough? Are there more existing standards around? Do you, Mike, suggest to propose an own spec.? -S. _______________________________________________ Geowanking mailing list [email protected] http://geowanking.org/mailman/listinfo/geowanking_geowanking.org
