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