The Data Compression News Blog

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

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Recent Posts

  • Bijective BWT (7 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 (113 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 (3 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    So many of today’s files are already compressed (using old, outdated algorithms) that newer algorithms don’t even get a chance to touch them.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

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

  • China’s AVS Specifications Available (2 Comments)

    Its old news that China has developed their own Advanced Video Standard to avoid high licensing fees. English translation of the standard is now available, along with the IPR policy. Finally something technical that you can get your hands on to feed your appetite.

Archive for February, 2006

The Future of MP3 and Surround

21st February 2006

Slashdot: Wired is running an article discussing the future of the MP3 format with the amount of competition out there, especially from the surround sound scene. Thompson, the entity that licenses the MP3 format, released the MP3 Surround format to try to combat this.

Read More | Posted by Sachin Garg | Add Comment »

Understanding the Lempel-Ziv Data Compression Algorithm in Java

21st February 2006

Developer.com runs an article that takes you through some of the basics.

Read More | Posted by Mark Nelson | 5 Comments »

ER Mapper releases new easy-to-use Image Mosaic and Compression Software

19th February 2006

Press Release: ER Mapper has released ER Mapper Mosaic-Balance-Compress (MBC). The mosaic can be compressed using ER Mapper’s industry standard ECW, or the emerging ISO standard JPEG 2000, image formats.

Read More | Posted by Sachin Garg | Add Comment »

Scientific-Atlanta Expands Advanced Digital Video Compression Technology Portfolio With Acquisition of UB Video Inc.

19th February 2006

Press Release: Technology offers up to 50 percent bit rate savings compared to MPEG-2. Further, the purchase of UB Video expands Scientific-Atlanta’s patented intellectual property portfolio. Scientific-Atlanta is into an agreement to be acquired by Cisco Systems.

Read More | Posted by Sachin Garg | 1 Comment »

OGC(R) Approves GML in JPEG 2000 Specification

19th February 2006

The Open Geospatial Consortium Inc. (OGC) membership has approved the OpenGIS(R) GML in JPEG 2000 for Geographic Imagery (GMLJP2) Implementation Specification. It is available for downloading.

Read More | Posted by Sachin Garg | Add Comment »

Forgent licenses JPEG patent to BenQ America

19th February 2006

Forgent has completed another patent license agreement covering its JPEG data compression technology. This is the third such deal announced after USPTO confirmed that it will reexamine the patent’s validity.

Read More | Posted by Sachin Garg | Add Comment »

PPMII Updated, ppmdj

16th February 2006

The fastest known PPM implementation, Dmitry Shkarin’s PPMII (also known as ppmd), is updated after 4 years. Along with improved compression and speed, this version also adds support for 64-bit processors and multi-threading.

Read More | Posted by Sachin Garg | Add Comment »

The Data Compression Newsletter - January 2006

15th February 2006

This year’s first issue of monthly Data Compression Newsletter.

Read More | Posted by Sachin Garg | Add Comment »

PAQ8C and PAQAR 4.5 released

14th February 2006

Matt Mahoney announced that PAQ8C by Przemyslaw Skibinski and PAQAR/PAQARCC 4.5 by Alexander Ratushnyak 5 are now available.

Read More | Posted by Sachin Garg | Add Comment »

Validation for MatrixView and ABO

13th February 2006

MatrixView continues to take the low road when it comes to promoting their compression technology.

Read More | Posted by Mark Nelson | 3 Comments »