资源简介
有关图像jpeg压缩算法介绍及其源码
压缩包的内容包括:1.有关JPEG和DPCM算法的文章;2.实现其算法的压缩程序3.有关图像压缩方面的资料。读者请注意:
这里讨论的是灰度图像的压缩不涉及彩色图像。
实现压缩时,输入的图像数据采用一种自定义的格式(com 格式),前四个字节记录图像的宽度和高度,之后就是逐
行的图像数据,图像的开头和结尾没有任何标记。这种格式的图像数据是从BMP图像中得到的。
这里没有JPEG算法的解压程序,压缩后的数据存成标准的JPEG文件格式,任何视图软件都可以打开。DPCM方法中的解
压缩程序将数据仍然存成com格式,可以将其转成PGM格式观看,压缩包中由com转为PGM格式的程序。
所有的C程序均是在Linux(Rethat7.3)下完成。
代码片段和文件信息
/* ansi2knr.c */
/* Convert ANSI C function definitions to K&R (“traditional C“) syntax */
/*
ansi2knr is distributed in the hope that it will be useful but WITHOUT ANY
WARRANTY. No author or distributor accepts responsibility to anyone for the
consequences of using it or for whether it serves any particular purpose or
works at all unless he says so in writing. Refer to the GNU General Public
License (the “GPL“) for full details.
Everyone is granted permission to copy modify and redistribute ansi2knr
but only under the conditions described in the GPL. A copy of this license
is supposed to have been given to you along with ansi2knr so you can know
your rights and responsibilities. It should be in a file named COPYLEFT.
[In the IJG distribution the GPL appears below not in a separate file.]
Among other things the copyright notice and this notice must be preserved
on all copies.
We explicitly state here what we believe is already implied by the GPL: if
the ansi2knr program is distributed as a separate set of sources and a
separate executable file which are aggregated on a storage medium together
with another program this in itself does not bring the other program under
the GPL nor does the mere fact that such a program or the procedures for
constructing it invoke the ansi2knr executable bring any other part of the
program under the GPL.
*/
/*
---------- Here is the GNU GPL file COPYLEFT referred to above ----------
----- These terms do NOT apply to the JPEG software itself; see README ------
GHOSTscript GENERAL PUBLIC LICENSE
(Clarified 11 Feb 1988)
Copyright (C) 1988 Richard M. Stallman
Everyone is permitted to copy and distribute verbatim copies of this
license but changing it is not allowed. You can also use this wording
to make the terms for other programs.
The license agreements of most software companies keep you at the
mercy of those companies. By contrast our general public license is
intended to give everyone the right to share Ghostscript. To make sure
that you get the rights we want you to have we need to make
restrictions that forbid anyone to deny you these rights or to ask you
to surrender the rights. Hence this license agreement.
Specifically we want to make sure that you have the right to give
away copies of Ghostscript that you receive source code or else can get
it if you want it that you can change Ghostscript or use pieces of it
in new free programs and that you know you can do these things.
To make sure that everyone has such rights we have to forbid you to
deprive anyone else of these rights. For example if you distribute
copies of Ghostscript you must give the recipients all the rights that
you have. You must make sure that they too receive or can get the
source code. And you must tell them their rights.
Also for our own protection we must make certain that everyone finds
out that there is no warranty
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 1133 2003-07-11 16:38 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\readme.txt
文件 2150806 2003-07-11 12:35 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\Thesis.pdf
文件 1171588 2003-04-22 18:27 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\arithmetic\ibmrd2302G.pdf
文件 1558833 2003-04-08 17:08 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\arithmetic\ibmrd2802C.pdf
文件 1233977 2003-04-22 18:24 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\arithmetic\ibmrd3206Cqe.pdf
文件 1819617 2003-04-22 18:25 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\arithmetic\ibmrd3206Eprediction.pdf
文件 60943 2003-07-11 16:21 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\arithmetic\jpeg-ari.zip
文件 1217180 2003-04-20 11:22 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\arithmetic\Langdon1.pdf
文件 2220059 2003-04-08 19:30 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\arithmetic\LangdonRi3.pdf
文件 808895 2003-04-09 22:09 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\arithmetic\LangdonRIssanen.pdf
文件 337391 2003-04-08 19:15 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\arithmetic\LangdonRissanen2.pdf
文件 1111451 2002-08-23 21:24 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\itu-t81.pdf
文件 763536 2003-07-11 16:21 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6.zip
文件 196359 2002-08-14 10:45 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\wallace.pdf
文件 20330 1998-03-27 18:35 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\README
文件 52991 1998-03-22 20:42 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\install.doc
文件 27733 1998-03-20 20:34 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\usage.doc
文件 10418 1998-03-20 20:29 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\cjpeg.1
文件 7669 1997-08-22 22:28 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\djpeg.1
文件 7700 1997-08-03 16:01 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\jpegtran.1
文件 1615 1997-10-11 18:46 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\rdjpgcom.1
文件 2730 1995-06-15 20:14 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\wrjpgcom.1
文件 9970 1995-11-15 11:30 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\wizard.doc
文件 17524 1996-01-06 18:23 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\example.c
文件 162344 1998-02-21 16:08 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\libjpeg.doc
文件 52844 1995-11-21 12:00 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\structure.doc
文件 5482 1996-01-06 17:37 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\coderules.doc
文件 8578 1998-03-15 13:57 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\filelist.doc
文件 9501 1998-03-27 18:35 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\change.log
文件 62320 1998-03-21 14:08 有关图像jpeg压缩算法介绍及其源码\image_compresion_by_sfj\reference\jpeg\jpegsr6\jpeg-6b\configure
............此处省略221个文件信息
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