Editing JasPer

{{Short description|Free software}}
{{Infobox software
| name                   = JasPer
| logo                   =
| screenshot             =
| caption                =
| collapsible            =
| author                 = The University of British Columbia, Michael David Adams, Image Power, Inc.
| developer              =
| released               = {{start date|1999}}<ref name="news">{{cite web |url=http://www.ece.uvic.ca/~mdadams/jasper/ |title=JasPer library: an open source JPEG 2000 codec |access-date=2010-07-28}}</ref>
| latest release version = {{wikidata|property|reference|edit|P348}}
| latest release date    = {{release date and age|{{wikidata|qualifier|P348|P577}}}}
| latest preview version =
| latest preview date    = 
| programming language   =
| operating system       = OSX, Windows, POSIX
| platform               =
| size                   =
| language               = [[C (programming language)|C]]
| status                 =
| genre                  = [[graphic software]]
| license                = [[JasPer License Version 2.0]]
| website                = {{url|http://www.ece.uvic.ca/~mdadams/jasper/}}
}}

'''JasPer''' is a computer software 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]].<ref>{{cite web| title= Image Power and the University of British Columbia Team Up in Development of Digital Image Compression Technology |location=[[Vancouver]], British Columbia, Canada |date= May 1, 1997|publisher=Image Power Inc. |work= Press release |url= http://www.imagepower.com/news/media_center/pr/1997/pr-may01-97.html |archive-url= https://web.archive.org/web/20061024212316/http://www.imagepower.com/news/media_center/pr/1997/pr-may01-97.html |archive-date= 2006-10-24}}</ref> It consists of a [[C (programming language)|C]] [[software library|library]] and some sample applications useful for testing the codec.

The copyright owner began licensing the code to the public under an [[MIT License]]-style license in 2004 in response to requests from the [[open-source software|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]]<ref name="kde3">{{cite web
 |url=http://techbase.kde.org/Development/Architecture/KDE3/Imaging_and_Animation
 |title=KDE TechBase - Development/Architecture/KDE3/Imaging and Animation
 |access-date=2010-01-20
}}</ref> (as of version 3.2).<ref name="jasper">{{cite web
 |url=http://www.ece.uvic.ca/~mdadams/jasper/
 |title=The JasPer Project Home Page
 |access-date=2010-01-20
}}</ref><ref name="xnview">{{cite web
 |url=http://www.xnview.com/wiki/index.php5?title=XnView_User_Guide
 |title=XnView User Guide
 |access-date=2010-01-20
}}</ref> {{As of | 2010 | June | 22}} the [[GEGL]] graphics library supported JasPer in its latest [[Git (software)|Git]] versions.<ref name="gegl">{{cite web
 |url=http://git.gnome.org/browse/gegl/commit/?id=d351c5fba3cc0796fb78e056af8eb7abb1e4b270
 |title=The GEGL source code git repository
 |date=22 June 2010
 |access-date=2010-07-28
}}</ref>

In a series of objective JPEG-2000-compression quality tests conducted in 2004, "JasPer was the best codec, closely followed by [[IrfanView]] and [[Kakadu (software)|Kakadu]]".<ref>
{{cite conference
 |title= JPEG vs. JPEG2000: An Objective Comparison of Image Encoding Quality
 |author=Ebrahimi, Farzad |author2=Chamik, Matthieu |author3=Winkler, Stefan
 |book-title= Applications of Digital Image Processing XXVII. Proceedings of the SPIE
 |volume= 5558
 |pages= 300–308 
 |date= November 2004
 |editor= Tescher, Andrew G. 
 |doi= 10.1117/12.564835
 |citeseerx = 10.1.1.65.5495
}}
</ref>
However, Jasper remains one of the slowest implementations of the JPEG-2000 codec, as it was designed for reference, not performance.{{Original research inline|date=March 2023}}

== 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.<ref>
{{cite web
 |url=http://iie.fing.edu.uy/ense/asign/codif/material/laboratorio/jpeg_2000/doc/jasper.pdf 
 |title=JasPer Software Reference Manual Version 1.500.4 
 |first=Michael D. 
 |last=Adams 
 |date=2001-12-25 
 |page=20 
 |access-date=2011-12-11 
 |quote=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. 
 |archive-url=https://web.archive.org/web/20120426042407/http://iie.fing.edu.uy/ense/asign/codif/material/laboratorio/jpeg_2000/doc/jasper.pdf 
 |archive-date=2012-04-26 
}}
</ref>

== See also ==
* [[OpenJPEG]]

== References ==
{{reflist}}
'''Notes:'''
{{refbegin}}
*{{cite book |author1=Adams, Michael D. |author2=Ward, Rabab K. |chapter=JasPer: a portable flexible open-source software tool kit for image coding/processing | title= IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04)|date= May 2004|isbn=0-7803-8484-9 |doi=10.1109/ICASSP.2004.1327092 |url=http://www.ece.uvic.ca/~frodo/publications/icassp2004.pdf}}
{{refend}}

[[Category:JPEG]]
[[Category:C (programming language) libraries]]
[[Category:Graphics software]]


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