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- pnmtotiff(1) AMIGA (13 January 1991) pnmtotiff(1)
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- NAME
- pnmtotiff - convert a a portable anymap into a TIFF file
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- SYNOPSIS
- pnmtotiff [-none|-packbits| -lzw|-g3|-g4] [-2d] [-fill] [-
- predictor n] [-msb2lsb|-lsb2msb] [-rowsperstrip n] [pnmfile]
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- DESCRIPTION
- Reads a portable anymap as input. Produces a TIFF file as
- output.
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- OPTIONS
- By default, pnmtotiff creates a TIFF file with LZW
- compression. This is your best bet most of the time.
- However, some TIFF readers can't deal with it. If you want
- to try another compression scheme or tweak some of the other
- even more obscure output options, there are a number of
- flags to play with.
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- The -none, -packbits, -lzw, -g3, and -g4 options are used to
- override the default and set the compression scheme used in
- creating the output file. The CCITT Group 3 and Group 4
- compression algorithms can only be used with bilevel data.
- The -2d and -fill options are meaningful only with Group 3
- compression: -2d requests 2-dimensional encoding, while -
- fill requests that each encoded scanline be zero-filled to a
- byte boundry. The -predictor option is only meaningful with
- LZW compression: a predictor value of 2 causes each scanline
- of the output image to undergo horizontal differencing
- before it is encoded; a value of 1 forces each scanline to
- be encoded without differencing.
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- By default, pnmtotiff creates a TIFF file with msb-to-lsb
- fill order. The -msb2lsb and -lsb2msb options are used to
- override the default and set the fill order used in creating
- the file.
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- The -rowsperstrip option can be used to set the number of
- rows (scanlines) in each strip of data in the output file.
- By default, the output file has the number of rows per strip
- set to a value that will ensure each strip is no more than 8
- kilobytes long.
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- BUGS
- This program is not self-contained. To use it you must
- fetch the TIFF Software package listed in the OTHER.SYSTEMS
- file and configure PBMPLUS to use libtiff. See PBMPLUS's
- Makefile for details on this configuration.
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- SEE ALSO
- tifftopnm(1), pnm(5)
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- Page 1 (printed 10/19/91)
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- pnmtotiff(1) AMIGA (13 January 1991) pnmtotiff(1)
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- AUTHOR
- Derived by Jef Poskanzer from ras2tiff.c, which is Copyright
- (c) 1990 by Sun Microsystems, Inc. Author: Patrick J.
- Naughton (naughton@wind.sun.com).
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- Page 2 (printed 10/19/91)
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