tiff2bw - convert a color TIFF image to greyscale
tiff2bw [ options ] input.tif output.tif
TIFF2BW(1) General Commands Manual 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 chan- nel, 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 compres- sion 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). ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+-----------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+-----------------------+ |Availability | image/library/libtiff | +---------------+-----------------------+ |Stability | Volatile | +---------------+-----------------------+ SEE ALSO pal2rgb(1), tiffinfo(1), tiffcp(1), tiffmedian(1), libtiff(3) Libtiff library home page: http://www.simplesystems.org/libtiff/ NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from http://down- load.osgeo.org/libtiff/tiff-4.2.0.tar.gz. Further information about this software can be found on the open source community website at http://www.simplesystems.org/libtiff/. libtiff November 2, 2005 TIFF2BW(1)