[X3D-Public] Tourtelotte Thesis on X3D Earth globe construction

Sven-Erik Tiberg Sven-Erik.Tiberg at ltu.se
Tue Oct 19 23:44:35 PDT 2010

Hi Christoph

In the thesis you will find a link to http://www.openstreetmap.org/ where all ( well most ) roads and rr-lines are plotted.
It's possible to export an geo area in xml format. Roads are in diffrent colour and railroads have diffrent shape depending on trackwidth.
An example: look at Landquart in east swiss where there are 2 rr-companies on the same rr-station SBB and RhB and you will note the diffrences in shape of the track. Same as in Altstätte north of Landquart.
The programs describes the rout of the track ( in 2D ) and changes the pattern on the track with railwidth.
One "challenge" can be to add the 3-dimention ( altitude ) to tracks and roads, to make them usefull in a 3D sceene.
As roads also have diffrent pattern and colour it could be possible to convert them to different 3D shapes.
A second challenge can be to find points in the rr/street roads where ther can be banks, cutting or bridges. www.openstreetmap.org<http://www.openstreetmap.org> gives some usefull hints where rr or/and streets crosses eachother.
Anyone who have merged geo-space with openstreetmap generated xml file.

Have some ideas for vegitaitons but they are not readdy to publish yet.

/Sven-Erik Tiberg

From: x3d-public-bounces at web3d.org [mailto:x3d-public-bounces at web3d.org] On Behalf Of Christoph Valentin
Sent: den 17 oktober 2010 14:47
To: Don Brutzman; x3d-public at web3d.org; x3d-earth at web3d.org
Cc: John.S.Moore3 at navy.mil; Laura.A.Moore at nga.mil; samille1 at nps.edu; drtourte at nps.edu; eric.frost at sdsu.edu
Subject: Re: [X3D-Public] Tourtelotte Thesis on X3D Earth globe construction

Hello Don

A very interesting topic.

I would have got a humble question.

Will the provisioning of this data base be a centralized provisioning or a distributed provisioning?

As some may know, I'm thinking about simulated railroads by X3D, and my question would be:

Assume two countries A and B with two railroad operators, who use such simulator for international trains moving from A to B or vice versa.

Would the X3D-Earth database be provided by
   - railroad operator A
   - railroad operator B
   - both of them somehow "together"
   - a third party
   - everyone has an own copy of the whole data base
   - etc.

Just I'm curious (I read that first interest is military interest, but I wouldn't preclude non-military usage)

Kind regards

-------- Original-Nachricht --------
Datum: Wed, 13 Oct 2010 07:49:23 -0700
Von: Don Brutzman <brutzman at nps.edu>
An: X3D Earth Working Group <x3d-earth at web3d.org>, X3D Graphics public mailing list <x3d-public at web3d.org>
CC: "John S. Moore CIV OPNAV N61 NC1, 5, 5452" <John.S.Moore3 at navy.mil>, "Laura A. Moore" <Laura.A.Moore at nga.mil>, "CAPT Scot Miller USN Ret." <samille1 at nps.edu>, Dale Tourtelotte <drtourte at nps.edu>, Eric Frost <eric.frost at sdsu.edu>
Betreff: [X3D-Public] Tourtelotte Thesis on X3D Earth globe construction

Dale Tourtelotte is presenting his completed thesis today on the
X3D Earth working group teleconference. Questions are welcome.
We will discuss his accomplishments and multiple opportunities
for future work.


Tourtelotte, Dale, X3D-Earth: Full-Globe Coverage Utilizing Multiple Datasets,
Masters Thesis, Naval Postgraduate School, Monterey California, September 2010.
Second readers Byounghyun Yoo and Don McGregor.

U.S. Armed Forces are typically utilizing and paying for commercial proprietary licensed products to visualize geospatial scenes, which nevertheless are themselves derived from government-produced data. This is unsatisfactory. This thesis has developed an open-source, royalty-free method for generating full-coverage 3D globes using the Extensible 3D (X3D) Graphics International Standard. Specifically, this thesis designs and generates robust globe models developing an instance of full global coverage utilizing X3D-Earth. In order to show interoperability and "Mash up" capabilities, multiple formats are used, including DTED Level 0 and NGA-produced satellite imagery. Imagery and corresponding terrain datasets are preprocessed using image processing and terrain parsing software, creating the X3D-Earth quad-tree tiles into multiple level-of-detail (LOD) file archives. Finally, these pyramidal, locale scenes are grouped and connected to form an overall X3D-Earth globe. Preproces

sing, processing and data storage are performed with the NPS Hamming Supercomputer. The result of this work is a methodology for generating X3D-Earth locales that is suitable for massive replication, optimization and reuse. Current results are promising and further work is warranted. The ultimate product is expected to further enable new tactical capabilities, provide direct end-user control of visualization-data pedigrees, and enable improved operational and navigational situational awareness for all deployed warfighters.

all the best, Don
Don Brutzman Naval Postgraduate School, Code USW/Br brutzman at nps.edu
Watkins 270 MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149
X3D, virtual worlds, underwater robots http://faculty.nps.edu/brutzman

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