X3D Binary Compression Capabilities and Plans

Approved ISO standard Compressed Binary Encoding (CBE) for X3D
- *.x3db* file extension
- Based on ISO standard Fast Infoset (FI) for XML compression
- Two independent open-source implementations in Java (Xj3D) and C++ ([forge.collaviz.org/community/xiot XIOT X3D Input Output Tool] library)

CAD Distillation Filter (CDF) technique allowing successive refinement of large X3D scenes into tighter X3D scenes
- multiple filters implemented in open-source Xj3D, X3D-Edit
- multiple other tools available with these capabilities

Plan to add a further-improved X3D Compressed Binary Encoding using now-approved W3C Recommendation for Efficient XML Interchange (EXI)
- Web3D contributed to EXI working group and XML Binary Characterization working group efforts, ensuring that 3D Model Compression, Serialization and Transmission use-case requirements are defined and met
- Design will include compatibility with CDF techniques, XML Encryption and XML Digital Signature for author authentication
- This meets most needs of digital authors for digital rights management

Some capabilities for network flexibility
- Anchor, Inline, LOD and Prototypes for successive retrieval of content
- Willing to consider integration of progressive mesh technologies, perhaps by a Call for Contributions
- Patented technologies can be considered, but only if eventual use will be royalty free for X3D use (if accepted)

this continued innovative work in 2012

various requirements for a 3D transmission format

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