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1.\" $Id: ras2tiff.1,v 1.3 2005/11/02 11:07:19 dron Exp $
2.\"
3.\" Copyright (c) 1990-1997 Sam Leffler
4.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
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7.\" its documentation for any purpose is hereby granted without fee, provided
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25.if n .po 0
26.TH RAS2TIFF 1 "November 2, 2005" "libtiff"
27.SH NAME
28ras2tiff \- create a
29.SM TIFF
30file from a Sun rasterfile
31.SH SYNOPSIS
32.B ras2tiff
33[
34.I options
35]
36.I input.ras
37.I output.tif
38.SH DESCRIPTION
39.I ras2tiff
40converts a file in the Sun rasterfile format to
41.SM TIFF.
42By default, the
43.SM TIFF
44image is created with data samples packed (\c
45.IR PlanarConfiguration =1),
46compressed with the Lempel-Ziv & Welch algorithm (\c
47.IR Compression =5),
48and with each strip no more than 8 kilobytes.
49These characteristics can overridden, or explicitly specified
50with the options described below.
51.PP
52Any colormap information in the rasterfile is carried over to the
53.SM TIFF
54file by including a
55.I Colormap
56tag in the output file.
57If the rasterfile has a colormap, the
58.I PhotometricInterpretation
59tag is set to 3 (palette);
60otherwise it is set to 2 (RGB) if the depth
61is 24 or 1 (min-is-black) if the depth is not 24.
62.SH OPTIONS
63.TP
64.B \-c
65Specify a compression scheme to use when writing image data:
66.B "\-c none"
67for no compression,
68.B "-c packbits"
69for the PackBits compression algorithm,
70.B "-c jpeg"
71for the baseline JPEG compression algorithm,
72.B "-c zip
73for the Deflate compression algorithm,
74and
75.B "\-c lzw"
76for Lempel-Ziv & Welch (the default).
77.TP
78.B \-r
79Write data with a specified number of rows per strip;
80by default the number of rows/strip is selected so that each strip
81is approximately 8 kilobytes.
82.SH BUGS
83Does not handle all possible rasterfiles.
84In particular,
85.I ras2tiff
86does not handle run-length encoded images.
87.SH "SEE ALSO"
88.BR pal2rgb (1),
89.BR tiffinfo (1),
90.BR tiffcp (1),
91.BR tiffmedian (1),
92.BR libtiff (3)
93.PP
94Libtiff library home page:
95.BR http://www.remotesensing.org/libtiff/
96