User manual - V-N500取扱説明書(2014年05月07日)

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We provide a set of library routines for reading and writing JPEG image files, plus two
sample applications "cjpeg" and "djpeg", which use the library to perform conversion
between JPEG and some other popular image file formats. The library is intended to be reused
in other applications.
In order to support file conversion and viewing software, we have included considerable
functionality beyond the bare JPEG coding/decoding capability; for example, the color
quantization modules are not strictly part of JPEG decoding, but they are essential for output
to colormapped file formats or colormapped displays. These extra functions can be compiled
out of the library if not required for a particular application. We have also included "jpegtran",
a utility for lossless transcoding between different JPEG processes, and "rdjpgcom" and
"wrjpgcom", two simple applications for inserting and extracting textual comments in JFIF
files.
The emphasis in designing this software has been on achieving portability and flexibility,
while also making it fast enough to be useful. In particular, the software is not intended to be
read as a tutorial on JPEG. (See the REFERENCES section for introductory material.) Rather,
it is intended to be reliable, portable, industrial-strength code. We do not claim to have
achieved that goal in every aspect of the software, but we strive for it.
We welcome the use of this software as a component of commercial products. No royalty is
required, but we do ask for an acknowledgement in product documentation, as described
under LEGAL ISSUES.
LEGAL ISSUES
============
In plain English:
1. We don't promise that this software works. (But if you find any bugs, please let us know!)
2. You can use this software for whatever you want. You don't have to pay us.
3. You may not pretend that you wrote this software. If you use it in a program, you must
acknowledge somewhere in your documentation that you've used the IJG code.
In legalese:
The authors make NO WARRANTY or representation, either express or implied, with
respect to this software, its quality, accuracy, merchantability, or fitness for a particular
purpose. This software is provided "AS IS", and you, its user, assume the entire risk as to its
quality and accuracy.
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