QccPack / News: Recent posts

QccPack: BETA Version-0.59-1 released

Main distribution - better uniform quantizers for sqencode, added QccFileRewind()

Posted by James E. Fowler 2015-06-18

QccPack: BETA Version-0.58-1 released

Main distribution - Added reversible KLT, KLT+3D-TCE coder for three-dimensional data, lossless 3D-TCE coder for three-dimensional data, and lossless KLT+3D-TCE coder for three-dimensional data.

Posted by James E. Fowler 2009-02-14

QccPack: BETA Version-0.57-1 released

QccPack provides an open-source collection of library routines and utility programs for quantization, compression, and coding of data.

Main distribution - added timer routines, vector angle measures

Posted by James E. Fowler 2008-07-01

BETA Version QccPack-0.56-1 released

Main distribution - added the DCT-TCE image coder

Posted by James E. Fowler 2008-03-14

BETA Version QccPack-0.55-1 released

Main distribution - module libQccPackHYP has been added for
hyperspectral image compression

Posted by James E. Fowler 2007-08-29

QccPack in Linux Journal

Check out Suhas Desai's article on using QccPack and Python for image processing in the latest issue (July 2007) of Linux Journal, http://www.linuxjournal.com/article/9692 --- including a prominent mention on the magazine cover, http://www.linuxjournal.com/issue/159 !!

Posted by James E. Fowler 2007-06-18

BETA Version QccPack-0.54-1 released

Main distribution - minor bug fixes

QccPackSPIHT - minor bug fix

QccPackSPECK - no changes

Posted by James E. Fowler 2007-04-30

BETA Version QccPack-0.53-1 released

Main distribution - integer-valued wavelet transforms added

QccPackSPIHT - no changes

QccPackSPECK - no changes

Posted by James E. Fowler 2006-06-15

BETA Version QccPack-0.52-1 released

Main distribution - minor bug fixes

QccPackSPIHT - no changes

QccPackSPECK - no changes

Posted by James E. Fowler 2006-05-05

BETA Version QccPack-0.51-1 released

Main distribution - documentation for QccPackIMG module

QccPackSPIHT - asymmetric-packet tree added

QccPackSPECK - minor bug fix

Posted by James E. Fowler 2005-08-12

BETA Version QccPack-0.50-1 released

Main distribution - Added motion estimation/compensation using regular triangle meshes, added the 3D-WDR coder for three-dimensional data, and fixed several bugs.

QccPackSPIHT - minor bug fixes

QccPackSPECK - no changes

Posted by James E. Fowler 2005-05-25

BETA Version QccPack-0.49-1 released

Main distribution - Added the spatial-block video coder and exponential-Golomb entropy coding.

QccPackSPIHT - no changes

QccPackSPECK - minor bug fix

Posted by James E. Fowler 2005-02-18

BETA Version QccPack-0.48-1 released

Main distribution - Routines added for: motion estimation and compensation with subpixel accuracy; CRC codes; hard and soft Viterbi decoding; bitstream fifo

QccPackSPIHT - minor bug fixes

QccPackSPECK - no changes

Posted by James E. Fowler 2005-02-02

BETA Version QccPack-0.47-1 released

Main distribution - The TCE algorithm (Tian and Hemami 2004) for image coding, Golomb coding for a lossless entropy coding, the 3D-BISK coder (Rucker and Fowler 2004) for three-dimensional data with arbitrary shape, and the RWMH video-coding algorithm (Cui, Wang, Fowler 2003) have been added.

QccPackSPIHT - an alternative interface to 3D-SPIHT was added

QccPackSPECK - the 3D-SPECK coder was added

Posted by James E. Fowler 2004-06-04

BETA Version QccPack-0.46-1 released

Main distribution - The standard module QccPackVID has been added. In this module is the RDWT-block coder (Park and Kim 2000) for image-sequence coding.

QccPackSPIHT - An alternative interface to SPIHT encoding and decoding that permits use of an external DWT and inverse DWT was added.

QccPackSPECK - Minor user-transparent changes.

Posted by James E. Fowler 2004-01-14

BETA Version QccPack-0.45-2 released

Main distribution - The 3D tarp coder (Wang, Rucker, Fowler 2003) for three-dimensional data has been added, and a few minor bugs have been fixed.

QccPackSPIHT - A few minor bugs have been fixed.

QccPackSPECK - Initial module creation.

Posted by James E. Fowler 2003-12-01

BETA Version QccPack-0.44-1 released

Main distribution - added support for 3D volumes and image cubes

QccPackSPIHT - added 3D-SPIHT algorithm for coding 3D volumes

Posted by James E. Fowler 2003-09-11

BETA Version QccPack-0.43-1 released

Main distribution - added BISK image coder and minor bug fixes

QccPackSPIHT - minor bug fix

Posted by James E. Fowler 2003-05-10

BETA Version QccPack-0.42-1 released

Main distribution - addition of subsampling-pattern parameter to all DWT routines to enhance interoperability with RDWT routines; tarp now uses fixed-point arithmetic for faster operation; image reading/writing now tries to guess file type

QccPackSPIHT - slight improvement to shape-adaptive coding

Posted by James E. Fowler 2003-02-25

BETA Version QccPack-0.41-1 Released

Main distribution - addition of tarp-filter algorithm for image coding, nonadaptive arithmetic coding, more general phase selection for DWT routines

QccPackSPIHT - optional rate-distortion profile output added to QccSPIHTEncode()

Posted by James E. Fowler 2002-09-06

BETA Version QccPack-0.40-1 Released

Main distribution --- adaptive Golomb coding and the Wavelet Difference Reduction (WDR) image coder added

QccPackSPIHT --- no changes

Posted by James E. Fowler 2002-07-19

BETA Version QccPack-0.39-1 released

Main distribution - QccPack now officially supports installation on Microsoft Windows platforms through use of the Cygwin UNIX emulation environment. The README file now has detailed information pertaining to Cygwin-based installation.

QccPackSPIHT - no changes

Posted by James E. Fowler 2002-06-24

BETA Version QccPack-0.38-1 released

Main distribution - minor bug fixes

QccPackSPIHT - minor bug fixes

Posted by James E. Fowler 2002-05-06

BETA Version QccPack-0.37-1 released

Main distribution --- Minor changes to Solaris build configuration (allows using gcc).

QccPackSPIHT --- No changes

Posted by James E. Fowler 2002-01-26

BETA Version QccPack-0.36-1 released

Main distribution --- added hue, saturation, value (HSV) color conversion, an example Reed-Solomon encoding program, and a variety of bug fixes.

QccPackSPIHT --- various bug fixes

Posted by James E. Fowler 2002-01-21