tiff2bw - Unix, Linux Command
NAME
tiff2bw - convert a color
TIFF image to greyscale
SYNOPSIS
tiff2bw [
options
]
input.tif output.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
| Tag | Description |
|---|
|
-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
Libtiff library home page:
http://www.remotesensing.org/libtiff/
|
