This is the command tiff2bw that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
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
-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).
Use tiff2bw online using onworks.net services
