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 standard 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.