11The Independent JPEG Group's JPEG software
22==========================================
33
4- README for release 8c of 16 -Jan-2011
4+ README for release 8d of 15 -Jan-2012
55====================================
66
77This distribution contains the eighth public release of the Independent JPEG
@@ -13,7 +13,8 @@ Bill Allombert, Jim Boucher, Lee Crocker, Bob Friesenhahn, Ben Jackson,
1313Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, Ge' Weijers,
1414and other members of the Independent JPEG Group.
1515
16- IJG is not affiliated with the official ISO JPEG standards committee.
16+ IJG is not affiliated with the ISO/IEC JTC1/SC29/WG1 standards committee
17+ (also known as JPEG, together with ITU-T SG16).
1718
1819
1920DOCUMENTATION ROADMAP
@@ -114,7 +115,7 @@ with respect to this software, its quality, accuracy, merchantability, or
114115fitness for a particular purpose. This software is provided "AS IS", and you,
115116its user, assume the entire risk as to its quality and accuracy.
116117
117- This software is copyright (C) 1991-2011 , Thomas G. Lane, Guido Vollbeding.
118+ This software is copyright (C) 1991-2012 , Thomas G. Lane, Guido Vollbeding.
118119All Rights Reserved except as specified below.
119120
120121Permission is hereby granted to use, copy, modify, and distribute this
@@ -222,9 +223,11 @@ Part 1: Requirements and guidelines" and has document numbers ISO/IEC IS
222223Continuous-tone Still Images, Part 2: Compliance testing" and has document
223224numbers ISO/IEC IS 10918-2, ITU-T T.83.
224225IJG JPEG 8 introduces an implementation of the JPEG SmartScale extension
225- which is specified in a contributed document at ITU and ISO with title "ITU-T
226- JPEG-Plus Proposal for Extending ITU-T T.81 for Advanced Image Coding", April
227- 2006, Geneva, Switzerland. The latest version of the document is Revision 3.
226+ which is specified in two documents: A contributed document at ITU and ISO
227+ with title "ITU-T JPEG-Plus Proposal for Extending ITU-T T.81 for Advanced
228+ Image Coding", April 2006, Geneva, Switzerland. The latest version of this
229+ document is Revision 3. And a contributed document ISO/IEC JTC1/SC29/WG1 N
230+ 5799 with title "Evolution of JPEG", June/July 2011, Berlin, Germany.
228231
229232The JPEG standard does not specify all details of an interchangeable file
230233format. For the omitted details we follow the "JFIF" conventions, revision
@@ -254,8 +257,8 @@ ARCHIVE LOCATIONS
254257The "official" archive site for this software is www.ijg.org.
255258The most recent released version can always be found there in
256259directory "files". This particular version will be archived as
257- http://www.ijg.org/files/jpegsrc.v8c .tar.gz, and in Windows-compatible
258- "zip" archive format as http://www.ijg.org/files/jpegsr8c .zip.
260+ http://www.ijg.org/files/jpegsrc.v8d .tar.gz, and in Windows-compatible
261+ "zip" archive format as http://www.ijg.org/files/jpegsr8d .zip.
259262
260263The JPEG FAQ (Frequently Asked Questions) article is a source of some
261264general information about JPEG.
@@ -281,6 +284,10 @@ ITU JPEG (Study Group 16) meeting in Geneva, Switzerland.
281284Thank to Thomas Wiegand and Gary Sullivan for inviting me to the
282285Joint Video Team (MPEG & ITU) meeting in Geneva, Switzerland.
283286
287+ Thank to Thomas Richter and Daniel Lee for inviting me to the
288+ ISO/IEC JTC1/SC29/WG1 (also known as JPEG, together with ITU-T SG16)
289+ meeting in Berlin, Germany.
290+
284291Thank to John Korejwa and Massimo Ballerini for inviting me to
285292fruitful consultations in Boston, MA and Milan, Italy.
286293
@@ -304,17 +311,35 @@ design and development of this singular software package.
304311FILE FORMAT WARS
305312================
306313
307- The ISO JPEG standards committee actually promotes different formats like
308- "JPEG 2000" or "JPEG XR" which are incompatible with original DCT-based
309- JPEG and which are based on faulty technologies. IJG therefore does not
310- and will not support such momentary mistakes (see REFERENCES).
311- We have little or no sympathy for the promotion of these formats. Indeed,
312- one of the original reasons for developing this free software was to help
313- force convergence on common, interoperable format standards for JPEG files.
314+ The ISO/IEC JTC1/SC29/WG1 standards committee (also known as JPEG, together
315+ with ITU-T SG16) currently promotes different formats containing the name
316+ "JPEG" which is misleading because these formats are incompatible with
317+ original DCT-based JPEG and are based on faulty technologies.
318+ IJG therefore does not and will not support such momentary mistakes
319+ (see REFERENCES).
320+ There exist also distributions under the name "OpenJPEG" promoting such
321+ kind of formats which is misleading because they don't support original
322+ JPEG images.
323+ We have no sympathy for the promotion of inferior formats. Indeed, one of
324+ the original reasons for developing this free software was to help force
325+ convergence on common, interoperable format standards for JPEG files.
314326Don't use an incompatible file format!
315327(In any case, our decoder will remain capable of reading existing JPEG
316328image files indefinitely.)
317329
330+ Furthermore, the ISO committee pretends to be "responsible for the popular
331+ JPEG" in their public reports which is not true because they don't respond to
332+ actual requirements for the maintenance of the original JPEG specification.
333+
334+ There are currently distributions in circulation containing the name
335+ "libjpeg" which claim to be a "derivative" or "fork" of the original
336+ libjpeg, but don't have the features and are incompatible with formats
337+ supported by actual IJG libjpeg distributions. Furthermore, they
338+ violate the license conditions as described under LEGAL ISSUES above.
339+ We have no sympathy for the release of misleading and illegal
340+ distributions derived from obsolete code bases.
341+ Don't use an obsolete code base!
342+
318343
319344TO DO
320345=====
@@ -323,4 +348,4 @@ Version 8 is the first release of a new generation JPEG standard
323348to overcome the limitations of the original JPEG specification.
324349More features are being prepared for coming releases...
325350
326- Please send bug reports, offers of help, etc. to jpeg-info@uc.ag .
351+ Please send bug reports, offers of help, etc. to jpeg-info@jpegclub.org .
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