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1 | <!-- Creator : groff version 1.18.1 --> |
2 | <!-- CreationDate: Mon Mar 13 18:03:12 2006 --> | |
3 | <html> | |
4 | <head> | |
5 | <meta name="generator" content="groff -Thtml, see www.gnu.org"> | |
6 | <meta name="Content-Style" content="text/css"> | |
7 | <title>TIFF2BW</title> | |
8 | </head> | |
9 | <body> | |
10 | ||
11 | <h1 align=center>TIFF2BW</h1> | |
12 | <a href="#NAME">NAME</a><br> | |
13 | <a href="#SYNOPSIS">SYNOPSIS</a><br> | |
14 | <a href="#DESCRIPTION">DESCRIPTION</a><br> | |
15 | <a href="#OPTIONS">OPTIONS</a><br> | |
16 | <a href="#SEE ALSO">SEE ALSO</a><br> | |
17 | ||
18 | <hr> | |
19 | <a name="NAME"></a> | |
20 | <h2>NAME</h2> | |
21 | <!-- INDENTATION --> | |
22 | <table width="100%" border=0 rules="none" frame="void" | |
23 | cols="2" cellspacing="0" cellpadding="0"> | |
24 | <tr valign="top" align="left"> | |
25 | <td width="8%"></td> | |
26 | <td width="91%"> | |
27 | <p>tiff2bw − convert a color <small>TIFF</small> image | |
28 | to greyscale</p> | |
29 | </td> | |
30 | </table> | |
31 | <a name="SYNOPSIS"></a> | |
32 | <h2>SYNOPSIS</h2> | |
33 | <!-- INDENTATION --> | |
34 | <table width="100%" border=0 rules="none" frame="void" | |
35 | cols="2" cellspacing="0" cellpadding="0"> | |
36 | <tr valign="top" align="left"> | |
37 | <td width="8%"></td> | |
38 | <td width="91%"> | |
39 | <p><b>tiff2bw</b> [ options ] <i>input.tif | |
40 | output.tif</i></p> | |
41 | </td> | |
42 | </table> | |
43 | <a name="DESCRIPTION"></a> | |
44 | <h2>DESCRIPTION</h2> | |
45 | <!-- INDENTATION --> | |
46 | <table width="100%" border=0 rules="none" frame="void" | |
47 | cols="2" cellspacing="0" cellpadding="0"> | |
48 | <tr valign="top" align="left"> | |
49 | <td width="8%"></td> | |
50 | <td width="91%"> | |
51 | <p><i>Tiff2bw</i> converts an <small>RGB</small> or Palette | |
52 | color <small>TIFF</small> image to a greyscale image by | |
53 | combining percentages of the red, green, and blue channels. | |
54 | By default, output samples are created by taking 28% of the | |
55 | red channel, 59% of the green channel, and 11% of the blue | |
56 | channel. To alter these percentages, the <b>−R</b>, | |
57 | <b>−G</b>, and <b>−B</b> options may be | |
58 | used.</p> | |
59 | </td> | |
60 | </table> | |
61 | <a name="OPTIONS"></a> | |
62 | <h2>OPTIONS</h2> | |
63 | <!-- TABS --> | |
64 | <table width="100%" border=0 rules="none" frame="void" | |
65 | cols="5" cellspacing="0" cellpadding="0"> | |
66 | <tr valign="top" align="left"> | |
67 | <td width="10%"></td> | |
68 | <td width="3%"> | |
69 | ||
70 | <p><b>−c</b></p> | |
71 | </td> | |
72 | <td width="5%"></td> | |
73 | <td width="80%"> | |
74 | ||
75 | <p>Specify a compression scheme to use when writing image | |
76 | data: <b>−c none</b> for no compression, <b>-c | |
77 | packbits</b> for the PackBits compression algorithm, <b>-c | |
78 | zip</b> for the Deflate compression algorithm, <b>-c g3</b> | |
79 | for the CCITT Group 3 compression algorithm, <b>-c g4</b> | |
80 | for the CCITT Group 4 compression algorithm, and <b>−c | |
81 | lzw</b> for Lempel-Ziv & Welch (the default).</p> | |
82 | </td> | |
83 | <td width="0%"> | |
84 | </td> | |
85 | <tr valign="top" align="left"> | |
86 | <td width="10%"></td> | |
87 | <td width="3%"> | |
88 | ||
89 | <p><b>−r</b></p> | |
90 | </td> | |
91 | <td width="5%"></td> | |
92 | <td width="80%"> | |
93 | ||
94 | <p>Write data with a specified number of rows per strip; by | |
95 | default the number of rows/strip is selected so that each | |
96 | strip is approximately 8 kilobytes.</p> | |
97 | </td> | |
98 | <td width="0%"> | |
99 | </td> | |
100 | <tr valign="top" align="left"> | |
101 | <td width="10%"></td> | |
102 | <td width="3%"> | |
103 | ||
104 | <p><b>−R</b></p> | |
105 | </td> | |
106 | <td width="5%"></td> | |
107 | <td width="80%"> | |
108 | ||
109 | <p>Specify the percentage of the red channel to use | |
110 | (default 28).</p> | |
111 | </td> | |
112 | <td width="0%"> | |
113 | </td> | |
114 | <tr valign="top" align="left"> | |
115 | <td width="10%"></td> | |
116 | <td width="3%"> | |
117 | ||
118 | <p><b>−G</b></p> | |
119 | </td> | |
120 | <td width="5%"></td> | |
121 | <td width="80%"> | |
122 | ||
123 | <p>Specify the percentage of the green channel to use | |
124 | (default 59).</p> | |
125 | </td> | |
126 | <td width="0%"> | |
127 | </td> | |
128 | <tr valign="top" align="left"> | |
129 | <td width="10%"></td> | |
130 | <td width="3%"> | |
131 | ||
132 | <p><b>−B</b></p> | |
133 | </td> | |
134 | <td width="5%"></td> | |
135 | <td width="80%"> | |
136 | ||
137 | <p>Specify the percentage of the blue channel to use | |
138 | (default 11).</p> | |
139 | </td> | |
140 | <td width="0%"> | |
141 | </td> | |
142 | </table> | |
143 | <a name="SEE ALSO"></a> | |
144 | <h2>SEE ALSO</h2> | |
145 | <!-- INDENTATION --> | |
146 | <table width="100%" border=0 rules="none" frame="void" | |
147 | cols="2" cellspacing="0" cellpadding="0"> | |
148 | <tr valign="top" align="left"> | |
149 | <td width="8%"></td> | |
150 | <td width="91%"> | |
151 | <p><b>pal2rgb</b>(1), <b>tiffinfo</b>(1), <b>tiffcp</b>(1), | |
152 | <b>tiffmedian</b>(1), <b>libtiff</b>(3)</p> | |
153 | <!-- INDENTATION --> | |
154 | <p>Libtiff library home page: | |
155 | <b>http://www.remotesensing.org/libtiff/</b></p> | |
156 | </td> | |
157 | </table> | |
158 | <hr> | |
159 | </body> | |
160 | </html> |