98 lines
2.8 KiB
Groff
98 lines
2.8 KiB
Groff
.\" $Header: /cvs/maptools/cvsroot/libtiff/man/ppm2tiff.1,v 1.2 2003-05-05 10:41:17 dron Exp $
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.\"
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.\" Copyright (c) 1991-1997 Sam Leffler
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.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
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.\"
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.\" Permission to use, copy, modify, distribute, and sell this software and
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.\" its documentation for any purpose is hereby granted without fee, provided
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.\" that (i) the above copyright notices and this permission notice appear in
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.\" all copies of the software and related documentation, and (ii) the names of
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.\" Sam Leffler and Silicon Graphics may not be used in any advertising or
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.\" publicity relating to the software without the specific, prior written
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.\" permission of Sam Leffler and Silicon Graphics.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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.\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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.\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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.\"
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.\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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.\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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.\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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.\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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.\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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.\" OF THIS SOFTWARE.
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.\"
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.if n .po 0
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.TH PPM2TIFF 1 "October 15, 1995"
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.SH NAME
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ppm2tiff \- create a
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.SM TIFF
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file from a
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.SM PPM
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image file
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.SH SYNOPSIS
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.B ppm2tiff
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[
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.I options
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] [
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.I input.ppm
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]
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.I output.tif
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.SH DESCRIPTION
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.I ppm2tiff
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converts a file in the
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.SM PPM
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image format to
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.SM TIFF.
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By default, the
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.SM TIFF
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image is created with data samples packed (\c
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.IR PlanarConfiguration =1),
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compressed with the Lempel-Ziv & Welch algorithm (\c
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.IR Compression =5),
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and with each strip no more than 8 kilobytes.
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These characteristics can be overriden, or explicitly specified
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with the options described below
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.PP
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If the
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.SM PPM
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file contains greyscale data, then the
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.I PhotometricInterpretation
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tag is set to 1 (min-is-black),
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otherwise it is set to 2 (RGB).
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.PP
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If no
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.SM PPM
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file is specified on the command line,
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.I ppm2tiff
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will read from the standard input.
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.SH OPTIONS
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.TP
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.B \-c
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Specify a compression scheme to use when writing image data:
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.B "\-c none"
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for no compression,
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.B "-c packbits"
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for the PackBits compression algorithm (the default),
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.B "-c jpeg"
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for the baseline JPEG compression algorithm,
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.B "-c zip
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for the Deflate compression algorithm,
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and
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.B "\-c lzw"
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for Lempel-Ziv & Welch compression.
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.TP
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.B \-r
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Write data with a specified number of rows per strip;
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by default the number of rows/strip is selected so that each strip
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is approximately 8 kilobytes.
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.TP
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.B \-R
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Mark the resultant image to have the specified
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X and Y resolution (in dots/inch).
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.SH "SEE ALSO"
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.IR tiffinfo (1),
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.IR tiffcp (1),
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.IR tiffmedian (1),
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.IR libtiff (3)
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