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- Newsgroups: comp.sources.misc
- Subject: v29i001: jpeg - JPEG image compression, Part01/18
- Keywords: JPEG, image compression
- Date: 24 Mar 92 06:06:13 GMT
- Sender: kent@sparky.imd.sterling.com (Kent Landfield)
- Followup-To: comp.sources.d
- Organization: Sterling Software
- Approved: kent@sparky.imd.sterling.com
-
- Submitted-by: jpeg-info@uunet.uu.net (Independent JPEG Group)
- Posting-number: Volume 29, Issue 1
- Environment: UNIX, VMS, MS-DOS, Mac, Amiga, Cray
-
- This package contains C software to implement JPEG image compression and
- decompression. 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.
-
- The distributed programs provide conversion between JPEG "JFIF" format and
- image files in PBMPLUS PPM/PGM, Utah RLE, Truevision Targa, and GIF file
- formats. The core compression and decompression modules can easily be
- reused in other programs, such as image viewers. The package is highly
- portable C code; we have tested it on many machines ranging from PCs to Crays.
-
- We are releasing this software for both noncommercial and commercial use.
- Companies are welcome to use it as the basis for JPEG-related products.
- We do not ask a royalty, although we do ask for an acknowledgement in
- product literature (see the README file in the distribution for details).
- We hope to make this software industrial-quality --- although, as with
- anything that's free, we offer no warranty and accept no liability.
-
- Tom Lane
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