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

John Carlson john.carlson3 at sbcglobal.net
Sun Oct 17 15:26:08 PDT 2010

Does anyone see an issue with using BitTorrent to deliver X3D Earth...or is it too proprietary?  Perhaps this could be discussed by the networking group?

On Oct 17, 2010, at 5:46 AM, Christoph Valentin wrote:

> 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
> Christoph
>> -------- 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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