LibJPEG, programming, image (de)compression library using the JPEG standard

From Wikipedia: libjpeg is a library of computer programs created
by the Independent JPEG Group which contain functions to manipulate
JPEG images. It is written entirely in the C programming language.
The current version of the library is 6b, although it has not been
updated since 1998.

JPEG is a standardized compression method for full-color and gray-scale
images. JPEG is intended for "real-world" scenes; cartoons and other
non-realistic images are not its strong suit. JPEG is lossy, meaning
that the output image is not identical to the input image. The user
can trade off output image quality against compressed file size by
adjusting a compression parameter.

http://en.wikipedia.org/wiki/libjpeg

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LibJPEG V6.2b
http://www.vsm.com.au/ftp/jfp/kits/
© Tous droits réservés 2003 Jean-François PIÉRONNE

LibJPEG is a image de/compression library using the JPEG standard used
by several software packages, including Python.

By default, the installation procedure installs this library package in 
the SYS$COMMON:[LIBJPEG] directory. To install it in another directory, 
dev:[dir], use the /DESTINATION parameter of the PRODUCT command. In this 
case, the library package will be installed in the dev:[dir.LIBJPEG] directory.

Installation

   1. Make the directory which holds the ZIP file your default directory
   2. Extract the PCSI kit from the ZIP archive.

$ UNZIP "-V" LIBJPEG-V0602--1.ZIP

   3. Install the library package to your chosen destination.

$ PRODUCT INSTALL libjpeg  (default)

  or ...

$ PRODUCT INSTALL libjpeg /DESTINATION=dev:[dir]

   4. Finally, run the DCL procedure STARTUP.COM to define the necessary logicals.

(You might want to add the relevant line to your SYSTARTUP_VMS.COM file.)

$ @SYS$COMMON:[LIBJPEG]STARTUP  (default)

or ...

$ @dev:[dir.LIBJPEG]STARTUP

