diff options
| author | dcommander <dcommander@3789f03b-4d11-0410-bbf8-ca57d06f2519> | 2010-11-23 05:49:54 +0000 |
|---|---|---|
| committer | dcommander <dcommander@3789f03b-4d11-0410-bbf8-ca57d06f2519> | 2010-11-23 05:49:54 +0000 |
| commit | c0b0d27a4200e7be2f880aa38e48a785775a5f28 (patch) | |
| tree | a2df80779541d7c9d674954ccb96b3e2b5ba857a /trunk/cjpeg.1 | |
| parent | 4f072976b4547d7bc1cd08b2d5897f006e2788a9 (diff) | |
Support arithmetic encoding and decoding
git-svn-id: https://libjpeg-turbo.svn.sourceforge.net/svnroot/libjpeg-turbo@299 3789f03b-4d11-0410-bbf8-ca57d06f2519
Diffstat (limited to 'trunk/cjpeg.1')
| -rw-r--r-- | trunk/cjpeg.1 | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/trunk/cjpeg.1 b/trunk/cjpeg.1 index 63a4e39..e4d95ee 100644 --- a/trunk/cjpeg.1 +++ b/trunk/cjpeg.1 @@ -214,6 +214,12 @@ visibly blur the image, however. .PP Switches for wizards: .TP +.B \-arithmetic +Use arithmetic coding. +.B Caution: +arithmetic coded JPEG is not yet widely implemented, so many decoders will be +unable to view an arithmetic coded JPEG file at all. +.TP .B \-baseline Force baseline-compatible quantization tables to be generated. This clamps quantization values to 8 bits even at low quality settings. (This switch is @@ -303,8 +309,6 @@ Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44. .SH AUTHOR Independent JPEG Group .SH BUGS -Arithmetic coding is not supported for legal reasons. -.PP Support for GIF input files was removed in cjpeg v6b due to concerns over the Unisys LZW patent. Although this patent expired in 2006, cjpeg still lacks GIF support, for these historical reasons. (Conversion of GIF files to |