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

Christoph Valentin christoph.valentin at gmx.at
Sun Oct 17 05:46:35 PDT 2010

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.
> 	https://savage.nps.edu/Savage/documents/10Sep_Tourtelotte.pdf
> 	https://savage.nps.edu/Savage/documents/10Sep_TourtelotteSlides.ppt
> 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.
> Abstract:
> 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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