| author | eckhart.koppen@nokia.com |
| Wed, 31 Mar 2010 11:06:36 +0300 | |
| changeset 7 | f7bc934e204c |
| permissions | -rw-r--r-- |
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<title>TIFF2RGBA</title> |
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</head> |
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<body> |
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<h1 align=center>TIFF2RGBA</h1> |
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<a href="#NAME">NAME</a><br> |
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<a href="#SYNOPSIS">SYNOPSIS</a><br> |
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<a href="#DESCRIPTION">DESCRIPTION</a><br> |
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<a href="#OPTIONS">OPTIONS</a><br> |
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<a href="#SEE ALSO">SEE ALSO</a><br> |
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<hr> |
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<a name="NAME"></a> |
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<h2>NAME</h2> |
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<table width="100%" border=0 rules="none" frame="void" |
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cols="2" cellspacing="0" cellpadding="0"> |
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<tr valign="top" align="left"> |
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<td width="8%"></td> |
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<td width="91%"> |
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<p>tiff2rgba − convert a <small>TIFF</small> image to |
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RGBA color space</p> |
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</td> |
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</table> |
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<a name="SYNOPSIS"></a> |
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<h2>SYNOPSIS</h2> |
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<!-- INDENTATION --> |
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<table width="100%" border=0 rules="none" frame="void" |
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cols="2" cellspacing="0" cellpadding="0"> |
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<tr valign="top" align="left"> |
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<td width="8%"></td> |
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<td width="91%"> |
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<p><b>tiff2rgba</b> [ options ] <i>input.tif |
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output.tif</i></p> |
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</td> |
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</table> |
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<a name="DESCRIPTION"></a> |
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<h2>DESCRIPTION</h2> |
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<!-- INDENTATION --> |
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<table width="100%" border=0 rules="none" frame="void" |
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cols="2" cellspacing="0" cellpadding="0"> |
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<tr valign="top" align="left"> |
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<td width="8%"></td> |
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<td width="91%"> |
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<p><i>Tiff2rgba</i> converts a wide variety of TIFF images |
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into an RGBA TIFF image. This includes the ability to |
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translate different color spaces and photometric |
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interpretation into RGBA, support for alpha blending, and |
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translation of many different bit depths into a 32bit RGBA |
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image.</p> |
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<!-- INDENTATION --> |
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<p>Internally this program is implemented using the |
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<i>TIFFReadRGBAImage()</i> function, and it suffers any |
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limitations of that image. This includes limited support for |
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> 8 BitsPerSample images, and flaws with some esoteric |
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combinations of BitsPerSample, photometric interpretation, |
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block organization and planar configuration.</p> |
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<!-- INDENTATION --> |
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<p>The generated images are stripped images with four |
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samples per pixel (red, green, blue and alpha) or if the -n |
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flag is used, three samples per pixel (red, green, and |
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blue). The resulting images are always planar configuration |
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contiguous. For this reason, this program is a useful |
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utility for transform exotic TIFF files into a form |
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ingestible by almost any TIFF supporting software.</p> |
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</td> |
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</table> |
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<a name="OPTIONS"></a> |
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<h2>OPTIONS</h2> |
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<!-- TABS --> |
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<table width="100%" border=0 rules="none" frame="void" |
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cols="5" cellspacing="0" cellpadding="0"> |
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<tr valign="top" align="left"> |
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<td width="11%"></td> |
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<td width="2%"> |
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<p><b>−c</b></p> |
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</td> |
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<td width="5%"></td> |
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<td width="80%"> |
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<p>Specify a compression scheme to use when writing image |
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data: <b>−c none</b> for no compression (the default), |
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<b>-c packbits</b> for the PackBits compression algorithm, |
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<b>-c zip</b> for the Deflate compression algorithm, <b>-c |
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jpeg</b> for the JPEG compression algorithm, and <b>−c |
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lzw</b> for Lempel-Ziv & Welch.</p> |
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</td> |
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<td width="0%"> |
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</td> |
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97 |
<tr valign="top" align="left"> |
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98 |
<td width="11%"></td> |
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99 |
<td width="2%"> |
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100 |
|
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101 |
<p><b>−r</b></p> |
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102 |
</td> |
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103 |
<td width="5%"></td> |
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104 |
<td width="80%"> |
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105 |
|
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106 |
<p>Write data with a specified number of rows per strip; by |
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107 |
default the number of rows/strip is selected so that each |
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108 |
strip is approximately 8 kilobytes.</p> |
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109 |
</td> |
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110 |
<td width="0%"> |
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111 |
</td> |
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112 |
<tr valign="top" align="left"> |
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113 |
<td width="11%"></td> |
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114 |
<td width="2%"> |
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115 |
|
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116 |
<p><b>−b</b></p> |
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117 |
</td> |
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118 |
<td width="5%"></td> |
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119 |
<td width="80%"> |
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120 |
|
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121 |
<p>Process the image one block (strip/tile) at a time |
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122 |
instead of by reading the whole image into memory at once. |
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123 |
This may be necessary for very large images on systems with |
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124 |
limited RAM.</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="11%"></td> |
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130 |
<td width="2%"> |
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131 |
|
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132 |
<p><b>−n</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>Drop the alpha component from the output file, producing |
|
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138 |
a pure RGB file. Currently this does not work if the -b flag |
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139 |
is also in effect.</p> |
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140 |
</td> |
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141 |
<td width="0%"> |
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142 |
</td> |
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143 |
</table> |
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144 |
<a name="SEE ALSO"></a> |
|
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145 |
<h2>SEE ALSO</h2> |
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146 |
<!-- INDENTATION --> |
|
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147 |
<table width="100%" border=0 rules="none" frame="void" |
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148 |
cols="2" cellspacing="0" cellpadding="0"> |
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149 |
<tr valign="top" align="left"> |
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150 |
<td width="8%"></td> |
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151 |
<td width="91%"> |
|
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152 |
<p><b>tiff2bw</b>(1), <b>TIFFReadRGBAImage</b>(3t), |
|
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153 |
<b>libtiff</b>(3)</p> |
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154 |
<!-- INDENTATION --> |
|
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155 |
<p>Libtiff library home page: |
|
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156 |
<b>http://www.remotesensing.org/libtiff/</b></p> |
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157 |
</td> |
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158 |
</table> |
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159 |
<hr> |
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160 |
</body> |
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161 |
</html> |