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OpenSolaris 2009.06 - man page for tiff2bw (opensolaris section 1)

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tiff2bw(1)				  User Commands 			       tiff2bw(1)

       tiff2bw - convert a color TIFF image to grayscale

       tiff2bw [options] input.tif output.tif

       tiff2bw converts an RGB or palette color TIFF image to a grayscale image by combining per-
       centages 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, use the -R. -G, and -B options.

       The following options are supported:

       -B	       Specify the percentage of the blue channel to use. The  default	value  is

       -c	       Specify a compression scheme to use when writing image data:

		       -c g3		       CCITT Group 3 compression algorithm.

		       -c g4		       CCITT Group 4 compression algorithm.

		       -c lzw		       Lempel-Ziv   and  Welch	algorithm.  This  is  the
					       default algorithm.

		       -c none		       No compression.

		       -c packbits	       PackBits compression algorithm.

		       -c zip		       Deflate compression algorithm.

       -G	       Specify the percentage of the green channel to use. The default	value  is

       -R	       Specify the percentage of the red channel to use. The default value is 28.

       -r	       Write data with a specified number of rows per strip. By default, the num-
		       ber of rows per strip is selected so that each strip  is  approximately	8

       The following operands are supported:

       input.tif       The name of the input TIFF file.

       output.tif      The name of the output file.

       See attributes(5) for descriptions of the following attributes:

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWTiff			   |
       |Interface stability	     |Uncommitted		   |

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

       Updated by Breda McColgan, Sun Microsystems Inc., 2004.

SunOS 5.11				   26 Mar 2004				       tiff2bw(1)
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