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

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'''Synopsis'''.  Lots of work has been accomplished towards proper support of X3D Binary Compression for a wide variety of potential uses.
 
'''Synopsis'''.  Lots of work has been accomplished towards proper support of X3D Binary Compression for a wide variety of potential uses.
  
* '''Standards and implementations'''Approved ISO standard [http://www.web3d.org/files/specifications/19776-3/V3.2/Part03/X3D_Binary.html Compressed Binary Encoding (CBE) for X3D]
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* '''Standards and implementations'''
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** Approved ISO standard [http://www.web3d.org/files/specifications/19776-3/V3.2/Part03/X3D_Binary.html Compressed Binary Encoding (CBE) for X3D]
 
** ''.x3db'' file extension
 
** ''.x3db'' file extension
 
** Based on ISO standard [http://en.wikipedia.org/wiki/Fast_Infoset Fast Infoset (FI)] for XML compression
 
** Based on ISO standard [http://en.wikipedia.org/wiki/Fast_Infoset Fast Infoset (FI)] for XML compression
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*** TODO: Plan to similarly automate conversions with XIOT for cross-check validation testing
 
*** TODO: Plan to similarly automate conversions with XIOT for cross-check validation testing
  
* '''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
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* '''Polygon reduction'''
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** [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] and [https://savage.nps.edu/X3D-Edit X3D-Edit]
 
** Multiple filters implemented in open-source [http://www.xj3d.org Xj3D] and [https://savage.nps.edu/X3D-Edit X3D-Edit]
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** [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
  
* '''Binary encodings'''Plan to add a further-improved X3D Compressed Binary Encoding using now-approved W3C Recommendation for [http://www.w3.org/TR/exi/ Efficient XML Interchange (EXI)]
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* '''Binary encodings'''
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** Plan to add a further-improved X3D Compressed Binary Encoding using now-approved W3C Recommendation for [http://www.w3.org/TR/exi/ Efficient XML Interchange (EXI)]
 
** Web3D contributed to [http://www.w3.org/XML/EXI/ EXI working group] and [http://www.w3.org/XML/Binary XML Binary Characterization working group] efforts, ensuring that [http://www.w3.org/TR/xbc-use-cases/#x3dtrans 3D Model Compression, Serialization and Transmission] use-case requirements are defined and met
 
** Web3D contributed to [http://www.w3.org/XML/EXI/ EXI working group] and [http://www.w3.org/XML/Binary XML Binary Characterization working group] efforts, ensuring that [http://www.w3.org/TR/xbc-use-cases/#x3dtrans 3D Model Compression, Serialization and Transmission] use-case requirements are defined and met
 
** Design includes compatibility with CDF techniques, [http://www.w3.org/TR/xmlenc-core XML Encryption], and [http://www.w3.org/TR/xmldsig-core/ XML Digital Signature] for author authentication
 
** Design includes compatibility with CDF techniques, [http://www.w3.org/TR/xmlenc-core XML Encryption], and [http://www.w3.org/TR/xmldsig-core/ XML Digital Signature] for author authentication
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** This meets most needs of digital authors for digital rights management
 
** This meets most needs of digital authors for digital rights management
  
* '''Networking'''Several capabilities are available for flexible network transmission
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* '''Networking'''
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** 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
 
** 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
 
** TODO: Willing to consider further addition of progressive-mesh geometric streaming technologies, perhaps by a public Call for Contributions

Revision as of 01:59, 13 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
  • TODO: A workshop might be a rapid way to compare candidate technologies that might complete these capabilities
  • X3D appears to have have an 80% solution already available that meets various requirements for a general 3D transmission format