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Amiga Format CD 22
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Amiga Format AFCD22 (Jan 1998, Issue 106).iso
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-in_the_mag-
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converters
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graphics
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netpbm
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pnmtoljpg
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man
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ljpgtopnm.txt
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1997-11-16
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LJPGTOPNM(1) LJPGTOPNM(1)
NAME
ljpgtopnm - decode a lossless JPEG file to a Portable
Pixmap or Portable Graymap image file
SYNOPSIS
ljpgtopnm [ -v ] [ filename ... ]
DESCRIPTION
ljpgtopnm decode a lossless JPEG file to a PPM (Portable
Pixmap) or PGM (Portable Graymap) image file. If no files
are specified, the standard input is decoded to the stan-
dard output.
OPTIONS
-v verbose
Display data about image format, image size and
sample precision.
EXAMPLES
This example decodes a ljpg file foo.ljpg and outputs to
foo.ppm.
ljpgtopnm foo.ljpg foo.ppm
Next example decodes the foo.ljpg with verbose option.
The output is saved as foo.ppm.
ljpgtopnm -v < foo.ljpg > foo.ppm
SEE ALSO
pnmtoljpg(1), ppm(5), pgm(5)
Wallace, Gregory K. "The JPEG Still Picture Compression
Standard", Communications of the ACM, April 1991 (vol. 34,
no. 4), pp. 30-44.
AUTHOR
Kongji Huang and Brian Smith
BUGS
Arithmetic coding and multiple scans are not supported.
14 June 1994 1