tiffdither -V (return code: 255)
tiffdither: invalid option -- '-'
LIBTIFF, Version 4.0.8
Copyright (c) 1988-1996 Sam Leffler
Copyright (c) 1991-1996 Silicon Graphics, Inc.
usage: tiffdither [options] input.tif output.tif
where options are:
-r # make each strip have no more than # rows
-t # set the threshold value for dithering (default 128)
-f lsb2msb force lsb-to-msb FillOrder for output
-f msb2lsb force msb-to-lsb FillOrder for output
-c lzw[:opts] compress output with Lempel-Ziv & Welch encoding
-c zip[:opts] compress output with deflate encoding
-c packbits compress output with packbits encoding
-c g3[:opts] compress output with CCITT Group 3 encoding
-c g4 compress output with CCITT Group 4 encoding
-c none use no compression algorithm on output
Group 3 options:
1d use default CCITT Group 3 1D-encoding
2d use optional CCITT Group 3 2D-encoding
fill byte-align EOL codes
For example, -c g3:2d:fill to get G3-2D-encoded data with byte-aligned EOLs
LZW and deflate options:
# set predictor value
For example, -c lzw:2 to get LZW-encoded data with horizontal differencing
tiffdither -HELP (return code: 255)
tiffdither: invalid option -- '-'
LIBTIFF, Version 4.0.8
Copyright (c) 1988-1996 Sam Leffler
Copyright (c) 1991-1996 Silicon Graphics, Inc.
usage: tiffdither [options] input.tif output.tif
where options are:
-r # make each strip have no more than # rows
-t # set the threshold value for dithering (default 128)
-f lsb2msb force lsb-to-msb FillOrder for output
-f msb2lsb force msb-to-lsb FillOrder for output
-c lzw[:opts] compress output with Lempel-Ziv & Welch encoding
-c zip[:opts] compress output with deflate encoding
-c packbits compress output with packbits encoding
-c g3[:opts] compress output with CCITT Group 3 encoding
-c g4 compress output with CCITT Group 4 encoding
-c none use no compression algorithm on output
Group 3 options:
1d use default CCITT Group 3 1D-encoding
2d use optional CCITT Group 3 2D-encoding
fill byte-align EOL codes
For example, -c g3:2d:fill to get G3-2D-encoded data with byte-aligned EOLs
LZW and deflate options:
# set predictor value
For example, -c lzw:2 to get LZW-encoded data with horizontal differencing