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tiff2bw (1)
>> tiff2bw (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
tiff2bw (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
NAME
tiff2bw - convert a color TIFF image to greyscale
SYNOPSIS
tiff2bw [ options ] input.tifoutput.tif
DESCRIPTION
Tiff2bw converts an RGB or Palette color TIFF image to a
greyscale image by combining percentages of the red, green,
and blue channels. By default, output samples are created
by taking 28% of the red channel, 59% of the green channel,
and 11% of the blue channel. To alter these percentages,
the -R, -G, and -B options may be used.
OPTIONS
-c Specify a compression scheme to use when writing image
data: -c none for no compression, -c packbits for the
PackBits compression algorithm, -c zip for the Deflate
compression algorithm, -c g3 for the CCITT Group 3
compression algorithm, -c g4 for the CCITT Group 4
compression algorithm, and -c lzw for Lempel-Ziv &
Welch (the default).
-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.
-R Specify the percentage of the red channel to use
(default 28).
-G Specify the percentage of the green channel to use
(default 59).
-B Specify the percentage of the blue channel to use
(default 11).
SEE ALSO
pal2rgb(1), tiffinfo(1), tiffcp(1), tiffmedian(1), lib-tiff(3)