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The Data Compression Information Source
Data compression is used just about everywhere. Data compression is useful because it helps reduce the consumption of expensive resources, such as hard disk space or transmission bandwidth. On the downside, compressed data must be decompressed to be used, and this extra processing may be detrimental to some applications. For instance, a compression scheme for video may require expensive hardware for the video to be decompressed fast enough to be viewed as it's being decompressed (the option of decompressing the video in full before watching it may be inconvenient, and requires storage space for the decompressed video). The design of data compression schemes therefore involves trade-offs among various factors, including the degree of compression, the amount of distortion introduced (if using a lossy compression scheme), and the computational resources required to compress and uncompress the data.
More...New article » An introduction to JBIG2
The world of digital media is constantly changing. Even at the home consumer level, digital media hardware and software applications are dated as soon as they're packaged for sale.
That makes any claim of being "a revolutionary breakthrough" suspect in our world. Yet JBIG2 is proving to be just that. This powerful technology allows electronic documents to be compressed into file sizes that offer optimal speed in transmission over business networks, via wireless and e-mail, and on the World Wide Web. In fact, JBIG2 offers a first: the capacity to generate a scanned document whose file size matches the size of its corresponding text file. In the hands of the right digital media vendor, the high-level compression advantages of JBIG2 are being combined seamlessly into a technology that reduces an image 10x to 100x with no loss of accuracy or quality.
Read more...New article » Compression basics
Because real-world files usually are quite redundant, compression can often reduce the file sizes considerably. This in turn reduces the needed storage size and transfer channel capacity. Especially in systems where memory is at premium compression can make the difference between impossible and implementable. Commodore 64 and its relatives are good examples of this kind of a system.
Read more...New article » The Data Compression Conference
Data Compression Conference is held at the Cliff Lodge convention center in the beautiful Snowbird / Alta Ski areas; located a short ride from the Salt Lake City International Airport.
Read more...7.09.2010New link » LZHAM codec
http://code.google.com/p/lzham/
LZHAM is an open source, lossless data compression library with a compression ratio similar to LZMA but with much faster decompression.
22.08.2010New link » FLAC's Lossless Audio Codecs Comparison
http://flac.sourceforge.net/comparison.html
This comparison, dated back to 2003, show the main characteristics, including compression ratio, support level, licence type, speed, of several popular lossless audio codecs.
2.08.2010New link » Lossless audio codec comparison from Hydrogenaudio.org
http://wiki.hydrogenaudio.org/index.php?title=Lossless_comparison#LA_-_LosslessAudio
Very good qualitative comparison of lossless audio codecs. It contains quite a few useful links also.
2.08.2010New link » La - Lossless Audio compression program
http://www.lossless-audio.com/
La is a Lossless Audio compression program giving (currently) superior compression ratio. Features: windows frontend (which also supports many other codecs), versions for both Windows and Linux OSes, Winamp, foobar2000 and Xmms plugins for playback.
2.08.2010New link » Alparysoft
The R&D department of Alparysoft company is developing multimedia technologies and software products in the video processing area. It specializes in video compression, image filtering, image identification, face recognition and other projects related to video processing. There are free downloads.