World Library  
Flag as Inappropriate
Email this Article

X Image Extension

Article Id: WHEBN0004261083
Reproduction Date:

Title: X Image Extension  
Author: World Heritage Encyclopedia
Language: English
Subject: X Window System, Xnest, Shape extension, X386, Re-parenting window manager
Publisher: World Heritage Encyclopedia

X Image Extension

X Image Extension, or XIE was an extension to the X Window System to enhance its graphics capability. It was intended to provide a powerful mechanism for the transfer and display of virtually any image on any X-capable hardware. It was first released with X11R6 in 1994. It is no longer included in the X11 reference distribution, having been removed with X11R6.7 in 2004.

XIE never gained significant usage — according to Jim Gettys, "it failed due to excessive complexity and lack of a good implementation."[1]

While not intended for use as a general purpose image-processing engine, XIE did provide a set of image rendition and enhancement primitives that could be combined into arbitrarily complex expressions. XIE also provided import and export facilities for moving images between client and server, and for accessing images as resources. The client side programming library, XIElib, was documented in the Prentice Hall book Developing Imaging Applications with XIElib by Syd Logan (ISBN 0-13-442914-1). In addition to the server and client library, a performance and test tool, xieperf, was included in X11R6. This client was also written by Syd Logan.

XIE was developed under contract to the X Consortium by a San Diego, CA company (no longer extant) called AGE Logic. Principal team members include Larry Hare, Bob Shelley, Dr. Dean Verheiden, Dr. Ben Fahey, Dr. Gary Rogers, and Syd Logan.

For all practical purposes, the Image Extension is obsolete. Adequate image performance is instead gained through use of the ubiquitous MIT-SHM extension, which allows transfer of large images between the client and server on the same machine (the common use-case) via shared memory.

See also


  1. ^ Open Source Desktop Technology Road Map (Jim Gettys, 9 December 2003)

External links

  • X Image Extension Overview paper
  • Page supporting the book Developing Imaging Applications with XIELib
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.