On 12/4/07, Mike Liebhold <[EMAIL PROTECTED]> wrote: > I'm also simply trying to understand why or why not start with a very > simple 3D coordinate descriptor, e.g. a 3D georss, or even KML. I do > have some hopes that some of the many 3D interoperability issues will > be worked out as KML is absorbed into the OGC. e.g both CityML, and > X3d/vrml groups have had some discussions with google at the OGC > regarding KML interoperability. Like wise, collada proponents are > similarly engaged with advocates of other 3D CAD schemes.
For whatever reason, GeoRSS doesn't support 3D. and even KML doesn't typically enforce it (see recent discussion on OGC mass-market ML about users typically putting visualization data for altitude, and that being encouraged by Google.) Once the topic comes up, CRS (not crschmidt, the coordinate) enforcer-types point out that EPSG:4326 is 2d only, so you can't do that, and sit back smugly. But I agree, it is trivially simple to use the existing GeoRSS and KML to support 3D descriptions. > All of the standards work may take years, but in the meantime, I suspect > people will want to start using a very simple 3D geoannotation for > handheld location apps. I have heard that Nokia and others are > investing large funds in rolling out AR services, so it's not too early > to start consideration of a widely useful open spec for 3D geoannotations. KML is especially useful for AR, since with the styling you can say "this object here" should have this color/marker/label "over here". > > Mike > > -- Thanks too, to Will King for the pointers to related AR projects! > > > > > stephen white wrote: > > On 01/12/2007, at 6:43 AM, Mike Liebhold wrote: > >> I've been thinking about use case for indoor gis ... including AR, > >> augmented reality, and immersive media. The core use case is > >> handheld AR: just hold up the viewfinder on your phone and imagine > >> geocoded hyperlinks, 3d vectors & polygons, and even photrealistic > >> media, overlaid on the realworld view. > > > > I've been working on this for a while, and would be interested in > > releasing the tools themselves as open source. I would retain my > > photographs as copyright, but that's a small issue that shouldn't be a > > problem in any way. > > > >> Also noting the absence of simple semantic 3D links between > >> georss-kml- wfs/gml-arcgis, cad collada), and VR open models (eg. > >> ibm/SL, vrml), oh and cityml, to and innumerable others. Fundamental > >> requirment is an atomically simple coordinate description eg. a 3d > >> georss, and then a robust consensus foss app stack for people to > >> casually or formally annotate - near field - 3d geospace and, > >> ideally for importing & mashing cool 3D data from other domains, > >> 3Dgis, CAD, games, virtual worlds > > > > I would also be interested in merging this with the earlier discussed > > Open Street View. I think we're talking about a project here, so can > > we please start talking about this and then form a group? > > > >> or care to specultate on an open geo stack for AR and immersive media? > > > > I think it would be a mistake to worry about setting standards for > > interoperability before having a starting point that actually works. > > Having said that, it's not all that hard to get something up onto the > > screen which then becomes a form of documentation that drives further > > effort. > > > > Rather than endless discussions of technical specifications, how about > > we try and drive this through a series of demonstrations? I am > > involved with Away3d ( http://away3d.com ), which could be a good > > basis for now, until OpenGL ES 2.0 comes with WhatWG. > > > > Steve. > > > > -- > > [EMAIL PROTECTED] > > > > > > _______________________________________________ > > Geowanking mailing list > > [email protected] > > http://lists.burri.to/mailman/listinfo/geowanking > > > > > > _______________________________________________ > Geowanking mailing list > [email protected] > http://lists.burri.to/mailman/listinfo/geowanking > -- Andrew Turner [EMAIL PROTECTED] 42.2774N x 83.7611W http://highearthorbit.com Ann Arbor, Michigan, USA Introduction to Neogeography - http://oreilly.com/catalog/neogeography _______________________________________________ Geowanking mailing list [email protected] http://lists.burri.to/mailman/listinfo/geowanking
