.\" $Id: gif2tiff.1,v 1.2 2005-09-20 10:07:55 dron Exp $
.\"
.\" Copyright (c) 1991-1997 Sam Leffler
.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
.\"
.\" Permission to use, copy, modify, distribute, and sell this software and 
.\" its documentation for any purpose is hereby granted without fee, provided
.\" that (i) the above copyright notices and this permission notice appear in
.\" all copies of the software and related documentation, and (ii) the names of
.\" Sam Leffler and Silicon Graphics may not be used in any advertising or
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.\" 
.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
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.\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
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.\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
.\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
.\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
.\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
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.\" OF THIS SOFTWARE.
.\"
.if n .po 0
.TH GIF2TIFF 1 "September 20, 2005" "gif2tiff"
.SH NAME
gif2tiff \- create a
.SM TIFF
file from a GIF87 format image file
.SH SYNOPSIS
.B gif2tiff
[
.I options
]
.I input.gif
.I output.tif
.SH DESCRIPTION
.I Gif2tiff
converts a file in the GIF87 format to
.SM TIFF.
The
.SM TIFF
image is created as a palette image, with samples
compressed with the Lempel-Ziv & Welch algorithm (\c
.IR Compression =5).
These characteristics can overridden, or explicitly specified
with the options described below.
.SH OPTIONS
.TP
.B \-c
Specify a compression scheme to use when writing image data:
.B "\-c none"
for no compression,
.B "-c packbits"
for the PackBits compression algorithm,
.B "-c zip"
for the Deflate compression algorithm,
and
.B "\-c lzw"
for Lempel-Ziv & Welch (the default).
.TP
.B \-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.
.SH NOTES
The program is based on Paul Haeberli's
.I fromgif
program which, in turn, is based on Marcel J.E. Mol's GIF reader.
.SH BUGS
Should have more options to control output format.
.SH "SEE ALSO"
.IR pal2rgb (1),
.IR tiffinfo (1),
.IR tiffcp (1),
.IR tiffmedian (1),
.IR libtiff (3)