Cisco Cisco StadiumVision Director ライセンス情報

 

 

DOCUMENTATION ROADMAP 

===================== 

 

This file contains the following sections: 

 

OVERVIEW            General description of JPEG and the IJG software. 

LEGAL ISSUES        Copyright, lack of warranty, terms of distribution. 

REFERENCES          Where to learn more about JPEG. 

ARCHIVE LOCATIONS   Where to find newer versions of this software. 

RELATED SOFTWARE    Other stuff you should get. 

FILE FORMAT WARS    Software *not* to get. 

TO DO               Plans for future IJG releases. 

 

Other documentation files in the distribution are: 

 

User documentation: 

  install.doc       How to configure and install the IJG software. 

  usage.doc         Usage instructions for cjpeg, djpeg, jpegtran, 

                    rdjpgcom, and wrjpgcom. 

  *.1               Unix-style man pages for programs (same info as 

usage.doc). 

  wizard.doc        Advanced usage instructions for JPEG wizards only. 

  change.log        Version-to-version change highlights. 

Programmer and internal documentation: 

  libjpeg.doc       How to use the JPEG library in your own programs. 

  example.c         Sample code for calling the JPEG library. 

  structure.doc     Overview of the JPEG library's internal structure. 

  filelist.doc      Road map of IJG files. 

  coderules.doc     Coding style rules --- please read if you contribute 

code. 

 

Please read at least the files install.doc and usage.doc.  Useful information 

can also be found in the JPEG FAQ (Frequently Asked Questions) article.  See 

ARCHIVE LOCATIONS below to find out where to obtain the FAQ article. 

 

If you want to understand how the JPEG code works, we suggest reading one or 

more of the REFERENCES, then looking at the documentation files (in roughly 

the order listed) before diving into the code. 

 

 

OVERVIEW 

======== 

 

This package contains C software to implement JPEG image compression and 

decompression.  JPEG (pronounced "jay-peg") is a standardized compression 

method for full-color and gray-scale images.  JPEG is intended for 

compressing 

"real-world" scenes; line drawings, cartoons and other non-realistic images 

are not its strong suit.  JPEG is lossy, meaning that the output image is not 

exactly identical to the input image.  Hence you must not use JPEG if you 

have to have identical output bits.  However, on typical photographic images, 

very good compression levels can be obtained with no visible change, and 

remarkably high compression levels are possible if you can tolerate a 

low-quality image.  For more details, see the references, or just experiment 

with various compression settings.