JasPer

JasPer
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 (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/

In the field of computer software, 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 operated 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 22 June 2010 the GEGL graphics library supported JasPer in its latest Git versions.[6]

In a series of objective JPEG-2000-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 JPEG-2000 codec, as it was designed for reference, not performance.

Etymology

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

References

  1. 1 2 "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: 10.1.1.65.5495.
  8. ↑ Adams, Michael D. (2001-12-25). "JasPer Software Reference Manual Version 1.500.4" (PDF). 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. line feed character in |quote= at position 83 (help)

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External links


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