The Data Compression News Blog

All about the most recent compression techniques, algorithms, patents, products, tools and events.

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Recent Posts

  • Google Snaps Up On2 (10 Comments)

  • Bijective BWT (35 Comments)

    David Scott has written a bijective BWT transform, which brings all the advantages of bijectiveness to BWT based compressors. Among other things, making BWT more suitable for compression-before-encryption and also give (slightly) better compression.

  • Asymmetric Binary System (172 Comments)

    Jarek Duda’s “Asymmetric Binary System” promises to be an alternate to arithmetic coding, having all the advantages, but being much simpler. Matt has coded a PAQ based compressor using ABS for back-end encoding. Update: Andrew Polar has written an alternate implementation of ABS.

  • Precomp: More Compression for your Compressed Files (7 Comments)

    So many of today’s files are already compressed (using old, outdated algorithms) that newer algorithms don’t even get a chance to touch them. Christian Schneider’s Precomp comes to rescue by undoing the harm.

  • On2 Technologies is Hiring (5 Comments)

    There aren’t too many companies working on cutting edge codecs, and of those few this one is hiring. Best of luck.

Search Results

JPEG2000 Security Standard, JPSEC

Posted on Sunday, May 6th, 2007

HP’s Susie Wee gives some insight on newly approved Part-8 of Jpeg2000 standard which deals with, among other things, intelligent encryption of Jpeg 2000 files. Susie has been working on media security for scalable media for some years now, and is a co-editor of the JPSEC standard.

Read More | Posted by Sachin Garg | Add Comment »

Free ITU Standards, Yepiee

Posted on Tuesday, December 12th, 2006

Come 2007, and you can download any ITU standard free from their website (this includes many major data compression standards).

Read More | Posted by Sachin Garg | 1 Comment »

MS WMPhoto Renamed HDPhoto, Officially Released

Posted on Tuesday, November 21st, 2006

Microsoft has renamed its new image format as HDPhoto (earlier called WMPhoto), and licensing terms have been revised. Version 1.0 of device porting kit is now available.

Read More | Posted by Sachin Garg | Add Comment »

The Data Compression Newsletter - October 2006

Posted on Friday, October 27th, 2006

October 2006 issue of the Data Compression Newsletter.

Read More | Posted by Sachin Garg | Add Comment »

Microsoft’s HD Photo not better than Jpeg 2000?

Posted on Monday, October 23rd, 2006

A report by MSU concludes that “some one-year old implementations of JPEG 2000 significantly outperform WMPhoto in objective and subjective comparison”. But this is NOT the final word. Bill Crow, program manager for Windows Media Photo, gives an interesting review of this comparison.

Read More | Posted by Sachin Garg | 7 Comments »

Apple ImageIO Buffer Overflow in Processing JPEG2000 Images

Posted on Monday, October 2nd, 2006

File-format security exploits are not all that new. This time viewing a maliciously-crafted JPEG2000 image may lead to an application crash or arbitrary code execution.

Read More | Posted by Sachin Garg | Add Comment »

JPEG’s Reply to Microsoft WMP: Better JPEG?

Posted on Thursday, June 15th, 2006

The new ITU extension to JPEG offers better (and faster) compression by introducing a new (backward incompatible) alternative Q15 arithmetic coding. Color precision is increased to maximum 16 bits per color component.

Read More | Posted by Sachin Garg | 16 Comments »

Digital Cinema (JPEG2000) Reaches Europe

Posted on Monday, March 27th, 2006

Press Release: Disney’s ‘Chicken Little’ is first film shown commercially in Europe to be compatible with Hollywood standards for digital cinema.

Read More | Posted by Sachin Garg | 1 Comment »

Digital Cinema Initiatives (DCI) Announces Collaboration With Fraunhofer Institute to Develop Digital Cinema System Compliance Test Procedures

Posted on Sunday, February 26th, 2006

Press Release: Comprehensive Test Procedures Will Establish a Certification Benchmark for Digital Cinema Projectors, Servers, and Associated Equipment.

Read More | Posted by Sachin Garg | Add Comment »

After JPEG, Now Patent Threat to MPEG-4

Posted on Thursday, February 9th, 2006

PCMag: AT&T Warns Apple, Others, of Patent Infringement over MPEG-4

Read More | Posted by Sachin Garg | 9 Comments »