Difference between revisions of "X3D Binary Compression Capabilities and Plans"

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* '''Polygon reduction'''. [http://www.web3d.org/x3d/workgroups/cad CAD Distillation Filter (CDF)] technique allowing successive refinement of large X3D scenes into tighter X3D scenes
 
* '''Polygon reduction'''. [http://www.web3d.org/x3d/workgroups/cad CAD Distillation Filter (CDF)] technique allowing successive refinement of large X3D scenes into tighter X3D scenes
 
** Extensible, repeatable [http://www.web3d.org/files/specifications/19776-3/V3.2/Part03/concepts.html#OverviewIntroduction compression-decompression data flow/production chains]
 
** Extensible, repeatable [http://www.web3d.org/files/specifications/19776-3/V3.2/Part03/concepts.html#OverviewIntroduction compression-decompression data flow/production chains]
** Multiple filters implemented in open-source [http://www.xj3d.org Xj3D], [https://savage.nps.edu/X3D-Edit X3D-Edit]
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** Multiple filters implemented in open-source [http://www.xj3d.org Xj3D] and [https://savage.nps.edu/X3D-Edit X3D-Edit]
 
** Multiple other [http://www.web3d.org/x3d/content/examples/X3dResources.html#Conversions conversion and translation tools] available with supporting capabilities
 
** Multiple other [http://www.web3d.org/x3d/content/examples/X3dResources.html#Conversions conversion and translation tools] available with supporting capabilities
 
** [http://www.web3d.org/x3d/specifications/ISO-IEC-19776-3-X3DEncodings-CompressedBinary/Part03/concepts.html#X3DCanonicalForm X3D Canonicalization (C14N)] provides standardized formatting so that digital signatures are not thwarted by whitespace variations
 
** [http://www.web3d.org/x3d/specifications/ISO-IEC-19776-3-X3DEncodings-CompressedBinary/Part03/concepts.html#X3DCanonicalForm X3D Canonicalization (C14N)] provides standardized formatting so that digital signatures are not thwarted by whitespace variations

Revision as of 18:16, 12 December 2011

Synopsis. Lots of work has been accomplished towards proper support of X3D Binary Compression for a wide variety of potential uses.

  • Networking. Several capabilities are available for flexible network transmission
    • Anchor, Inline, LOD, LoadSensor, Script and Prototype nodes support successive retrieval of content once initial model is displayed
    • TODO: Willing to consider further addition of progressive-mesh geometric streaming technologies, perhaps by a public Call for Contributions
    • Intellectual Property Rights (IPR) protections for X3D specification
      • Patented technologies can be considered, but only when eventual use will be royalty free for X3D use (if eventually accepted)
      • Submitters can restrict patented submissions to working group while under consideration, if desired
    • TODO: Use cases and test examples can demonstrate whether http/https and local-file url retrieval are sufficient for a network protocol
      • Other network protocols (Web sockets, P2P channels, etc.) might be possible, but only if security restrictions can be handled satisfactorily

Looking ahead

  • Web3D's X3D and CAD Working Groups each have member commitments to pursue this continued innovative work in 2012
  • X3D appears to have have an 80% solution already available that meets various requirements for a general 3D transmission format
  • TODO: A workshop might be a rapid way to compare candidate technologies that might complete these capabilities