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

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m (Looking ahead)
m (Standards)
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* Optional gzip compression and MIME Type definitions  
 
* Optional gzip compression and MIME Type definitions  
 
** XML encoding ([http://www.web3d.org/files/specifications/19776-1/V3.2/Part01/concepts.html#X3DFilesAndTheWorldWideWeb .x3dz/.x3d.gz]), ClassicVRML encoding ([http://www.web3d.org/files/specifications/19776-2/V3.2/Part02/concepts.html#ClassicVRMLEncodedX3DFilesAndWWW .x3dvz/.x3dv.gz]) and Compressed Binary encoding ([http://www.web3d.org/files/specifications/19776-3/V3.1/Part03/concepts.html#X3DFilesAndTheWorldWideWeb .x3db.gz]) file extensions
 
** XML encoding ([http://www.web3d.org/files/specifications/19776-1/V3.2/Part01/concepts.html#X3DFilesAndTheWorldWideWeb .x3dz/.x3d.gz]), ClassicVRML encoding ([http://www.web3d.org/files/specifications/19776-2/V3.2/Part02/concepts.html#ClassicVRMLEncodedX3DFilesAndWWW .x3dvz/.x3dv.gz]) and Compressed Binary encoding ([http://www.web3d.org/files/specifications/19776-3/V3.1/Part03/concepts.html#X3DFilesAndTheWorldWideWeb .x3db.gz]) file extensions
** Original compression technique of gzip compression for .wrl VRML called .wrz (TODO need reference)
+
** Original compression technique of gzip compression for .wrl VRML called .wrz (TODO need reference).  This is a common practice.
  
 
== Polygon reduction and geometric compression ==
 
== Polygon reduction and geometric compression ==

Revision as of 18:11, 20 December 2011

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

X3D appears to have have an 80% solution already available that meets various requirements for a general 3D transmission format.

Standards

Polygon reduction and geometric compression

Binary encodings

Network streaming

  • Multiple capabilities are already available in X3D 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 access to patented submissions during member-only working group review, 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

Implementations

Looking ahead

  • Web3D's X3D and CAD Working Groups each have member commitments to pursue this continued innovative work in 2012
  • TODO: An open workshop on 3D Transmission Formats might be a thorough way to compare candidate technologies to complete these capabilities