Jpeg Encoder in VTK?

[Sebastien Barre]

At 11:49 09/03/00 -0500, Bill Hoffman a écrit:
>There are some issues with using libtiff and libjpeg.
>Both of these libraries use patented algorithms which might
>be troublesome for commercial products based on VTK.

I do not remember about these issues :

The IJG code is free for both noncommercial and commercial use; only an
acknowledgement in your documentation is required to use it in a product.
(See the README file in the distribution for details.)

from :

http://www.faqs.org/faqs/jpeg-faq/part2/

Subject: [15] Freely available source code for JPEG

Free, portable C code for JPEG compression is available from the Independent
JPEG Group.  Source code, documentation, and test files are included.
Version 6b is available from ftp.uu.net:/graphics/jpeg/jpegsrc.v6b.tar.gz.
If you are on a PC you may prefer ZIP archive format, which you can find at
ftp.simtel.net:/pub/simtelnet/msdos/graphics/jpegsr6b.zip (or at any
Simtel mirror site).  On CompuServe, see the Graphics Learning forum
(GO CIS:LEARN), library 12 "JPEG Tools", file jpegsr6b.zip.

The IJG code includes a reusable JPEG compression/decompression library,
plus sample applications "cjpeg" and "djpeg", which perform conversion
between JPEG JFIF format and image files in PPM/PGM (PBMPLUS), BMP,
Utah RLE, and Targa formats.  A third application "jpegtran" provides
lossless transcoding between different JPEG formats --- for example, it can
convert a baseline JPEG file to an equivalent progressive JPEG file.
jpegtran can also do lossless rotation and flipping of JPEG files.  Two
small applications "wrjpgcom" and "rdjpgcom" insert and extract textual
comments in JFIF files.  The package is highly portable; it has been used
successfully on many machines ranging from Apple IIs to Crays.

The IJG code is free for both noncommercial and commercial use; only an
acknowledgement in your documentation is required to use it in a product.
(See the README file in the distribution for details.)


--
Sebastien BARRE
IRCOM-SIC, UMR-CNRS 6615 - Université de Poitiers
Bât. SP2MI, Bvd 3 - Téléport 2, BP 179 F-86960 Futuroscope Cedex
Tel. : +33 (0)5 49 49 65 95 / 65 83, Fax : +33 (0)5 49 49 65 70
http://www-sic.univ-poitiers.fr/barre/ ou  http://www.hds.utc.fr/~barre/
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