| TIFF2BW(1) | LibTIFF | TIFF2BW(1) |
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 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).
SEE ALSO¶
pal2rgb (1), tiffinfo (1), tiffcp (1), tiffmedian (1), libtiff (3tiff),
AUTHOR¶
LibTIFF contributors
COPYRIGHT¶
1988-2022, LibTIFF contributors
| December 17, 2022 | 4.5 |