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diff --git a/tiff/man/tiffdither.1 b/tiff/man/tiffdither.1 deleted file mode 100644 index 0e1294c..0000000 --- a/tiff/man/tiffdither.1 +++ /dev/null @@ -1,132 +0,0 @@ -.\" $Id: tiffdither.1,v 1.4 2006/04/20 12:17:19 dron Exp $ -.\" -.\" Copyright (c) 1990-1997 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 -.\" publicity relating to the software without the specific, prior written -.\" permission of Sam Leffler and Silicon Graphics. -.\" -.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, -.\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY -.\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. -.\" -.\" 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 -.\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE -.\" OF THIS SOFTWARE. -.\" -.if n .po 0 -.TH TIFFDITHER 1 "September 20, 2005" "libtiff" -.SH NAME -tiffdither \- convert a greyscale image to bilevel using dithering -.SH SYNOPSIS -.B tiffdither -[ -.I options -] -.I input.tif -.I output.tif -.SH DESCRIPTION -.I tiffdither -converts a single channel 8-bit greyscale image to a bilevel image -using Floyd-Steinberg error propagation with thresholding. -.SH OPTIONS -.TP -.B \-c -Specify the compression to use for data written to the output file: -.B none -for no compression, -.B packbits -for PackBits compression, -.B lzw -for Lempel-Ziv & Welch compression, -.B zip -for Deflate compression, -.B g3 -for CCITT Group 3 (T.4) compression, -and -.B g4 -for CCITT Group 4 (T.6) compression. -By default -.I tiffdither -will compress data according to the value of the -.I Compression -tag found in the source file. -.IP -The -.SM CCITT -Group 3 and Group 4 compression algorithms can only -be used with bilevel data. -.IP -Group 3 compression can be specified together with several -T.4-specific options: -.B 1d -for 1-dimensional encoding, -.B 2d -for 2-dimensional encoding, -and -.B fill -to force each encoded scanline to be zero-filled so that the -terminating EOL code lies on a byte boundary. -Group 3-specific options are specified by appending a ``:''-separated -list to the ``g3'' option; e.g. -.B "\-c g3:2d:fill" -to get 2D-encoded data with byte-aligned EOL codes. -.IP -.SM LZW -compression can be specified together with a -.I predictor -value. -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. -LZW-specific options are specified by appending a ``:''-separated -list to the ``lzw'' option; e.g. -.B "\-c lzw:2" -for -.SM LZW -compression with horizontal differencing. -.TP -.B \-f -Specify the bit fill order to use in writing output data. -By default, -.I tiffdither -will create a new file with the same fill order as the original. -Specifying -.B "\-f lsb2msb" -will force data to be written with the -.I Fill\%Order -tag set to -.SM LSB2MSB , -while -.B "\-f msb2lsb" -will force data to be written with the -.I Fill\%Order -tag set to -.SM MSB2LSB . -.TP -.B \-t -Set the threshold value for dithering. -By default the threshold value is 128. -.SH NOTES -The dither algorithm is taken from the -.BR tiffmedian (1) -program (written by Paul Heckbert). -.SH "SEE ALSO" -.BR pal2rgb (1), -.BR fax2tiff (1), -.BR tiffinfo (1), -.BR tiffcp (1), -.BR tiff2bw (1), -.BR libtiff (3TIFF) -.PP -Libtiff library home page: -.BR http://www.remotesensing.org/libtiff/ |