readme-spiht

该源码是SPIHT即分层树集合划分算法的c代码,希望对搞压缩编码的朋友们有用.

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                             Q C C P A C K S P I H T

                            Version 0.34, 06-jul-2001

                    Copyright (C) 1997-2001  James E. Fowler

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  Contents:
    - Overview
    - Availability
    - Installation
    - Copyright and License Information

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OVERVIEW:

  The QccPackSPIHT module is a optional addon to the QccPack library for
  the quantization, compression and coding of data.  The QccPackSPIHT module
  provides an implementation of the Set Partitioning in Hierarchical Trees
  (SPIHT) algorithm for image compression.  Since the SPIHT algorithm is
  patented, it is made available here under special license terms (see below
  and the file LICENSE-SPIHT), whereas the QccPack library is licensed under
  the GNU General Public License and the GNU Library General Public License.
  See the file CHANGELOG-SPIHT for details of recent changes to the
  QccPackSPIHT code.


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AVAILABILITY:

  For updated versions of QccPackSPIHT, contact:
    Dr. James E. Fowler, Assistant Professor, Mississippi State University
    [e-mail]
  or consult the QccPack Web page:
    http://www.ece.msstate.edu/~fowler/QccPack


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INSTALLATION:

Installation Note:

  To compile the QccPackSPIHT module, you must have already obtained
  the main QccPack source-code distribution, untarred it to a directory,
  and configured the QccPack.config properly to build QccPack. Refer to
  the installation instructions for QccPack for details on how to 
  accomplish these tasks before proceeding with the instructions below.

Installation Steps:
	
    - Untar the QccPackSPIHT module distribution into the directory
      in which you have previously untarred the QccPack source-code
      distribution.  Specifically, if you have placed the QccPack
      source code into the directory /usr/local/QccPack, and the
      QccPackSPIHT module tar file is /usr/local/QccPackSPIHT-0.21-X.tar,
      do the following:
        - Type "cd /usr/local/QccPack"
	- Type "tar xvf /usr/local/QccPackSPIHT-0.21-X.tar"
    - Edit the file QccPack.config :
        - Uncomment the line that reads #define QCCPACK_SPIHT to enable
	    the optional QccPackSPIHT module
    - Now (re)build the Makefiles and (re)compile the QccPack source:
        - Type "imake".
	- Type "make Makefiles".
	- Type "make".
	- When you're happy that things compiled OK, type "make install" to
	    put the libraries, header files, binaries, and man pages into
	    their final installation locations.
    - Type "man QccPackSPIHT" or point your browser to
        file:$(QCCPACK_INSTALL)/doc/QccPackSPIHT.3.html to view the available
        documentation for the QccPackSPIHT module.


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COPYRIGHT AND LICENSE INFORMATION:

  Copyright (C) 1997-2001  James E. Fowler
  
  The Set Partitioning In Hierarchical Trees (SPIHT) algorithm is protected
  by US Patent #5,764,807 (issued June 9, 1998) and other international
  patents and patents pending. An implementation of the SPIHT algorithm is
  included herein (utility programs spihtencode and spihtdecode, and spiht.c
  in the QccPack library) with the permission of PrimaComp, Inc., exclusive
  holder of patent rights. PrimaComp has graciously granted a license with
  certain restrictions governing the terms and conditions for use, copying,
  distribution, and modification of the SPIHT algorithm implementation
  contained herein. Specifically, only use in academic and non-commercial
  research is permitted, while all commercial use is prohibited.  Refer to
  the file LICENSE-SPIHT for more details.
  
  All programs herein are distributed in the hope that they will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the full text
  of the appropriate license for more details.
  

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