NAME
pgmtoimgv - Portable Graymap to Pilot Image Viewer converter.
SYNOPSIS
pgmtoimgv [-h] [-v] [-4] [-t title] [-n notefile] [-{c|m|u}] [in [out]]
DESCRIPTION
pgmtoimgv is a simple filter for converting Portable Graymaps to
grayscale Pilot Image Viewer pdb files. The input pgm file must use
the following palette unless you specify the -4 switch:
P3
4 1
255
0 0 0
85 85 85
170 170 170
255 255 255
if you specify -4, then your grayscale image must use this palette:
P3
16 1
255
0 0 0
17 17 17
34 34 34
51 51 51
68 68 68
85 85 85
102 102 102
119 119 119
136 136 136
153 153 153
170 170 170
187 187 187
204 204 204
221 221 221
238 238 238
255 255 255
If your PGM file doesn’t use one of these palettes, use ppmquant(1) to
convert your palette.
If an image’s width is not a multiple of 16 pixels, enough extra white
pixels will be added at the right side to ensure alignment. Images
will be padded, with white pixels, to a width and height of 160 if
needed.
OPTIONS
-h Display a short summary of the command line options and exit.
-v Display the version and exit.
-4 Use 4 bit grayscale (16 shades of gray).
-t title
Specify the title of the image (up to 31 characters).
-n notefile
Specify the note file. No note is attached to the image by
default.
-c Produce a compressed image.
-m Produce a compressed image if it is smaller than the
uncompressed version. This is the default compression mode.
-u Produce an uncompressed image.
in The input file. The default is the standard input.
out The output file. The default is the standard output.
SEE ALSO
imgvinfo(1), imgvtopnm(1), imgvview(1), pbmtoimgv(1), ppmimgvquant(1),
pbm(5), pgm(5).
BUGS
Bug reports should be sent to Eric A. Howe (mu@trends.net).
LICENSE
Copyright (C) 1997,1998 Eric A. Howe <http://www.trends.net/~mu>.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
675 Mass Ave, Cambridge, MA 02139, USA.
Sept 1997