From Wikipedia, the free encyclopedia
Jump to: navigation, search
Original author(s) The University of British Columbia, Michael David Adams, Image Power, Inc.
Initial release 1999 (1999)[1]
Stable release 1.900.1 / January 19, 2007; 7 years ago (2007-01-19)[1]
Operating system OSX, Windows, POSIX
Available in C
Type graphic software
License JasPer License Version 2.0
Website www.ece.uvic.ca/~mdadams/jasper/

JasPer, a project to create a reference implementation of the codec specified in the JPEG-2000 Part-1 standard (i.e. ISO/IEC 15444-1), started in 1997 at Image Power Inc. and at the University of British Columbia.[2] It consists of a C library and some sample applications useful for testing the codec.

The license changed in early 2004 to an MIT License-style one, in response to requests from the open source community. As of 2011 JasPer operates as a component of many software projects, both free and proprietary, including (but not limited to) netpbm (as of release 10.12), ImageMagick and KDE[3] (as of version 3.2).[4][5] As of June 22, 2010, GEGL graphics library has supported JasPer in its latest Git versions.[6]

In a series of objective, JPEG2000-compression quality tests conducted in 2004, "JasPer was the best codec, closely followed by IrfanView and Kakadu."[7] However, Jasper remains one of the slowest implementations of the jpeg2000 codec, as it was designed for reference, not performance.


The name "JasPer" has simultaneous connotations with Canada's Jasper National Park, with the semi-precious gemstone, jasper, and with "JP" as an abbreviation of the JPEG-2000 standard.[8]

See also[edit]


  1. ^ a b "JasPer library : an open source JPEG 2000 codec". Retrieved 2010-07-28. 
  2. ^ "Image Power and the University of British Columbia Team Up in Development of Digital Image Compression Technology". Press release. Vancouver, BC: Image Power Inc. May 1, 1997. Archived from the original on 2006-10-24. 
  3. ^ "KDE TechBase - Development/Architecture/KDE3/Imaging and Animation". Retrieved 2010-01-20. 
  4. ^ "The JasPer Project Home Page". Retrieved 2010-01-20. 
  5. ^ "XnView User Guide". Retrieved 2010-01-20. 
  6. ^ "The GEGL source code git repository". Retrieved 2010-07-28. 
  7. ^ Farzad Ebrahimi, Farzad; Chamik,Matthieu; Winkler, Stefan (November 2004). "JPEG vs. JPEG2000: An Objective Comparison of Image Encoding Quality". In Tescher, Andrew G. Applications of Digital Image Processing XXVII. Proceedings of the SPIE 5558. Genista Corporation. pp. 300–308. doi:10.1117/12.564835. CiteSeerX: 
  8. ^ Adams, Michael D. (2001-12-25). "JasPer Software Reference Manual Version 1.500.4". p. 20. Retrieved 2011-12-11. The JasPer software is named, in part, after Jasper National Park [...] 'jasper' is also the name of an opaque cryptocrystalline variety of quartz used for ornamentation or as a gemstone - hence, the implication that the software is precious (i.e., like a gemstone). Lastly, the name "jasper" [...] contains a letter "J" followed subsequently by a letter "P", not unlike the abbreviation "JP" that is associated with the JPEG-2000 standard. 


External links[edit]