Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   9747 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

TIFF2BW(1)							    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).

SEE ALSO
       pal2rgb(1), tiffinfo(1), tiffcp(1), tiffmedian(1), libtiff(3)

       Libtiff library home page: http://www.remotesensing.org/libtiff/

libtiff			       November 2, 2005			    TIFF2BW(1)

Vote for polarhome