Fedora 13 Update: CharLS-1.0-1.fc13

updates at fedoraproject.org updates at fedoraproject.org
Sun Feb 13 08:49:40 UTC 2011

Fedora Update Notification
2011-02-03 20:02:28

Name        : CharLS
Product     : Fedora 13
Version     : 1.0
Release     : 1.fc13
URL         : http://charls.codeplex.com/
Summary     : An optimized implementation of the JPEG-LS standard
Description :
An optimized implementation of the JPEG-LS standard for loss less and
near loss less image compression. JPEG-LS is a low-complexity standard that
matches JPEG 2000 compression ratios. In terms of speed, CharLS outperforms
open source and commercial JPEG LS implementations.

JPEG-LS (ISO-14495-1/ITU-T.87) is a standard derived from the Hewlett Packard
LOCO algorithm. JPEG LS has low complexity (meaning fast compression) and high
compression ratios, similar to JPEG 2000. JPEG-LS is more similar to the old
loss less JPEG than to JPEG 2000, but interestingly the two different techniques
result in vastly different performance characteristics.

Update Information:

Finally, the 1.0 release of CharLS!
Compared to the beta, the following is changed/added:

    * Improved C++ standard compliance for compatibility with:
          o Visual C++ (Compilable with Visual Studio 2008, x86, x64, and ARM cpu's)
          o GCC for Linux x64/x86 (warning free in pedantic mode)
          o GCC for MinGWin
          o XCode
          o Big-Endian platforms
          o CPU's with aligned memory access requirements
          o many more (but not recently tested)
    * Improved security (prevent potentially exploitable crashes). Won't crash on random data.
    * Reduced memory use through DISABLE_SPECIALIZATIONS define (not enabled by default)
    * Header file can now be included from C++ and C source files
    * Added unit test for Dicom WG04 sample images (files not included)
    * Fixes to ensure CharLS streams are readable by Java JAI JPEG-LS code.
    * Added tolerance for non-standard padding bits

* Thu Feb  3 2011 Mario Ceresa mrceresa at gmail.com CharLS 1.0-1
- Update to new version
- Applied patch to fix bug http://charls.codeplex.com/workitem/7823

This update can be installed with the "yum" update program.  Use 
su -c 'yum update CharLS' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

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