[x3d-public] Fwd: [cad] 8 OCT 2015 meeting minutes: 3D printing and 3D scanning profile discussion

Mon Oct 19 08:03:46 PDT 2015

Good to hear John.  We could certainly use someone in the group to help us ensure that LIDAR requirements are thoroughly included.

On 10/17/2015 2:57 PM, John Carlson wrote:
> Thanks Don, very relevant to my LIDAR research.
>
> On Oct 17, 2015 11:26 AM, "Don Brutzman" <brutzman at nps.edu <mailto:brutzman at nps.edu>> wrote:
>
>     Here is a very interesting development that has the potential for broad interest and impact.
>
>     Feedback and participation in the CAD Working Group is most welcome.
>
>     http://www.web3d.org/working-groups/computer-aided-design-cad
>
>
>     -------- Forwarded Message --------
>     Subject: 8 OCT 2015 meeting minutes: 3D printing and 3D scanning profile discussion
>     Date: Fri, 16 Oct 2015 07:33:01 -0700
>     From: Don Brutzman <brutzman at nps.edu <mailto:brutzman at nps.edu>>
>     Organization: Naval Postgraduate School
>     To: Cad3D working group <Cad at web3d.org <mailto:Cad at web3d.org>>
>     CC: Coakley, Meghan (NIH/NIAID) [C] <meghan.coakley at nih.gov <mailto:meghan.coakley at nih.gov>>
>
>     Attendees: Meghan Coakley, Anita Havele, Vince Marchetti, Christophe Mouton.  Regrets Hyokwang Lee.
>
>     Apologies for delays in producing the minutes for this important meeting.
>
>     Primary outcomes: pursuing a 3D Printer profile for X3D is definitely an activity that will be pursued, and integrating a 3D Scanner profile is likely to happen also.
>
>     Details follow, additions and comments welcome.
>
>     1. Welcome Meghan and thanks for your interest!  If you'd like to subscribe to the cad working group mailing list, it is online at
>
>     http://web3d.org/mailman/listinfo/cad_web3d.org
>
>     2.  Astro Print.  Several of us had an interesting dialog with folks at Astro Print, a "Cloud OS for 3D Printers."  They indicated possible interest in X3D and a 3D printing profile.  We invited them to check out the CAD working group and consider joining Web3D.
>
>     https://www.astroprint.com
>
>     3. Point clouds.  We discussed the importance of point cloud data and potential improvements to X3D support for points.  This topic is also related to volume rendering and 3D scanning.  Our current representations are pretty simplistic.
>
>     PointSet
>     http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/rendering.html#PointSet
>     http://www.web3d.org/x3d/content/X3dTooltips.html#PointSet
>
>     Point size
>     https://www.opengl.org/sdk/docs/man2/xhtml/glPointSize.xml
>     http://http.developer.nvidia.com/Cg/PointSize.html
>
>     Vince described how GPS devices can record point values at ~1-second intervals, producing lots of data about a vehicle's (or individual's) track.  In some sense this is a "point cloud for the day" that is commonly created.
>
>     Recent NPS product comparisons looking at a variety of scanners showed that most tools appear to be producing point clouds that then require further manipulation and cleanup using tools like MeshLab.  Pretty tedious and error prone.  Most also seemed to have proprietary/private compression and just issued text-based point triplets.
>
>     http://meshlab.sourceforge.net
>
>     http://www.web3d.org/x3d/content/examples/X3dSceneAuthoringHints.html#Meshes
>
>     However, at least one scanner gives quality feedback while scanning and creates a corresponding mesh.  We ended up selecting Dot Product, initial test results are excellent.
>
>     http://www.dotproduct3d.com
>
>     Related work on X3D Efficient Binary Encoding (EBE) has not found any common compression scheme for point data so this will be an important capability to continue looking at.
>
>              X3D Compressed Binary Encoding Activity
>     http://www.web3d.org/working-groups/x3d/compressed-binary-encoding-activity
>
>     The availability of 3D scanning technology is about to explode as cloud-based apps for mobile phones and tablets begin to deploy.
>
>     4. New profile.  We discussed the possibility of a new X3D profile for 3D printing.
>
>     a. Goal: simplify high-quality publication and sharing of printable 3D models.
>
>     b. Stakeholders: authors, tools, repositories, printer companies, other working groups (Heritage, Medical), multiple Web3D members, and inviting other candidate Web3D members.
>
>     c. Rules of engagement: Web3D member-only contributions for IPR protection (keeping X3D unencumbered) with primarily open public disclosure and comment for best results.
>
>     d. Assets:
>     - X3D CAD Geometry Component and CAD Interchange Profile meets numerous requirements already.
>
>     http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/CADGeometry.html
>     http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/CADInterchange.html
>
>     - Multiple specifications for 3D printing are already in use - STL, AMF, 3MF - that appear to be mostly subsets of X3D.
>
>     - X3D CAD is already aligned with ISO STEP, Open Web Architecture, etc.
>
>     - Shape Resource Compression (SRC) and Efficient Binary Encoding (EBE) efforts are progressing well.
>
>     - Proven process: Web3D working groups successfully improve X3D thanks to IPR protections, open standards, multiple example implementations including open source, designing for archival use.
>
>     e. Use cases: numerous.  It will be good to get clear on precisely "what problems are we solving" to meet our goals well.  Discussed examples included printed objects and products, printed parts for repair/replacement, medical, VR/MAR, modeling, simulating and visualizing builds before printing, etc. etc. etc.
>
>     5. Combined profile.  We had a really interesting discussion about how 3D printing and 3D scanning are perhaps opposite sides of the same coin, i.e. inverses of each other.  In effect 3D printing creates atoms from bits, and 3D scanning creates bits from atoms.  Wow!  the possibilities indeed seem huge so we ought to pursue these together to try and achieve a comprehensive solution.
>
>     No combined specification for 3D printing and 3D scanning yet found...  We have the opportunity to lead in these arenas by providing common capabilities and archival stability that reduces the cost of scanning, printing and archiving for reliable adaptable re-use.
>
>     6. Monthly meetings.  We decided to resume monthly meetings on the first Thursday of each month at the regular working-group time, 8-930 pacific.  Hyo and Don will follow up after each meeting.  Next call: Thursday November 5.
>
>     http://www.web3d.org/calendar
>
>     http://www.web3d.org/member/teleconference-information
>
>     7. Agenda items for next month:
>     - Draft outline of Call for Contributions supporting X3D Profile for 3D Printing and 3D Scanning
>     - Announcing and inviting participation by members, community, and others
>
>     Additional discussion and topics welcome.  Thanks everyone for considering the possibilities!
>
>     all the best, Don
>     --
>     Don Brutzman  Naval Postgraduate School, Code USW/Br brutzman at nps.edu <mailto:brutzman at nps.edu>
>     Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149 <tel:%2B1.831.656.2149>
>     X3D graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman
>
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>

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 graphics, virtual worlds, navy robotics http://faculty.nps.edu/brutzman