tiff2bw¶
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
compress
¶ 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, -c lzw for Lempel-Ziv & Welch (the default).
-
-r
striprows
¶ 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
redperc
¶ Specify the percentage of the red channel to use (default 28).
-
-G
greenperc
¶ Specify the percentage of the green channel to use (default 59).
-
-B
blueperc
¶ Specify the percentage of the blue channel to use (default 11).