Windows PowerShell command on Get-command tiff2bw
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Manual Pages for UNIX Operating System command usage for man tiff2bw

User Commands tiff2bw(1)

NAME

tiff2bw - convert a color TIFF image to grayscale

SYNOPSIS

tiff2bw [options] input.tif output.tif

DESCRIPTION

tiff2bw converts an RGB or palette color TIFF image to a

grayscale 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, use the

-R. -G, and -B options.

OPTIONS The following options are supported:

-B Specify the percentage of the blue channel

to use. The default value is 11.

-c Specify a compression scheme to use when

writing image data:

-c g3 CCITT Group 3

compression algo-

rithm.

-c g4 CCITT Group 4

compression algo-

rithm.

-c lzw Lempel-Ziv and Welch

algorithm. This is

the default algo-

rithm.

-c none No compression.

-c packbits PackBits compression

algorithm.

SunOS 5.11 Last change: 26 Mar 2004 1

User Commands tiff2bw(1)

-c zip Deflate compression

algorithm.

-G Specify the percentage of the green channel

to use. The default value is 59.

-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 number of rows per strip is selected so that each strip is approximately 8 kilobytes. OPERANDS The following operands are supported: input.tif The name of the input TIFF file. output.tif The name of the output file.

ATTRIBUTES

See attributes(5) for descriptions of the following attri-

butes:

____________________________________________________________

| ATTRIBUTE TYPE | ATTRIBUTE VALUE |

|_____________________________|_____________________________|

| Availability | image/library/libtiff |

|_____________________________|_____________________________|

| Interface stability | Uncommitted |

|_____________________________|_____________________________|

SEE ALSO

pal2rgb(1), tiffinfo(1), tiffcp(1), tiffmedian(1), lib-

tiff(3) NOTES

SunOS 5.11 Last change: 26 Mar 2004 2

User Commands tiff2bw(1)

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

SunOS 5.11 Last change: 26 Mar 2004 3




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