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| TIFF2BW(1) | FreeBSD General Commands Manual | TIFF2BW(1) |
NAME
tiff2bw - convert a color TIFF image to greyscaleSYNOPSIS
tiff2bw [ options ] input.tif output.tifDESCRIPTION
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), libtiff(3)Libtiff library home page: http://www.simplesystems.org/libtiff/
| November 2, 2005 | libtiff |
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