PPM2TIFF
Section: User Commands (1)
Updated: March 1, 2006
Page Index
NAME
ppm2tiff - create a
TIFF
file from
PPM, PGM
and
PBM
image files
SYNOPSIS
ppm2tiff
[
options
] [
input.ppm
]
output.tif
DESCRIPTION
ppm2tiff
converts a file in the
PPM, PGM
and
PBM
image formats to
TIFF.
By default, the
TIFF
image is created with data samples packed (
PlanarConfiguration=1),
compressed with the Packbits algorithm (
Compression=32773),
and with each strip no more than 8 kilobytes. These characteristics can be
overridden, or explicitly specified with the options described below
If the
PPM
file contains greyscale data, then the
PhotometricInterpretation
tag is set to 1 (min-is-black), otherwise it is set to 2 (RGB).
If no
PPM
file is specified on the command line,
ppm2tiff
will read from the standard input.
OPTIONS
- -c
-
Specify a compression scheme to use when writing image data:
none
for no compression,
packbits
for PackBits compression (will be used by default),
lzw
for Lempel-Ziv & Welch compression,
jpeg
for baseline JPEG compression,
zip
for Deflate compression,
g3
for CCITT Group 3 (T.4) compression,
and
g4
for CCITT Group 4 (T.6) compression.
- -r
-
Write data with a specified number of rows per strip; by default the number of
rows/strip is selected so that each strip is approximately 8 kilobytes.
- -R
-
Mark the resultant image to have the specified X and Y resolution (in
dots/inch).
SEE ALSO
tiffinfo(1),
tiffcp(1),
tiffmedian(1),
libtiff(3)
Libtiff library home page:
http://www.simplesystems.org/libtiff/