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man pages section 1: User Commands

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Updated: Thursday, June 13, 2019
 
 

tiff2bw (1)

Name

tiff2bw - convert a color TIFF image to greyscale

Synopsis

tiff2bw [ options ] input.tif output.tif

Description

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
       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-4.0.10.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)