src/tiff/html/man/tiff2rgba.1.html

   1 <!-- Creator     : groff version 1.18.1 -->
   2 <!-- CreationDate: Mon Mar 13 18:03:13 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>TIFF2RGBA</title>
   8 </head>
   9 <body>
  10
  11 <h1 align=center>TIFF2RGBA</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>tiff2rgba &minus; convert a <small>TIFF</small> image to
  28 RGBA color space</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>tiff2rgba</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>Tiff2rgba</i> converts a wide variety of TIFF images
  52 into an RGBA TIFF image. This includes the ability to
  53 translate different color spaces and photometric
  54 interpretation into RGBA, support for alpha blending, and
  55 translation of many different bit depths into a 32bit RGBA
  56 image.</p>
  57 <!-- INDENTATION -->
  58 <p>Internally this program is implemented using the
  59 <i>TIFFReadRGBAImage()</i> function, and it suffers any
  60 limitations of that image. This includes limited support for
  61 &gt; 8 BitsPerSample images, and flaws with some esoteric
  62 combinations of BitsPerSample, photometric interpretation,
  63 block organization and planar configuration.</p>
  64 <!-- INDENTATION -->
  65 <p>The generated images are stripped images with four
  66 samples per pixel (red, green, blue and alpha) or if the -n
  67 flag is used, three samples per pixel (red, green, and
  68 blue). The resulting images are always planar configuration
  69 contiguous. For this reason, this program is a useful
  70 utility for transform exotic TIFF files into a form
  71 ingestible by almost any TIFF supporting software.</p>
  72 </td>
  73 </table>
  74 <a name="OPTIONS"></a>
  75 <h2>OPTIONS</h2>
  76 <!-- TABS -->
  77 <table width="100%" border=0 rules="none" frame="void"
  78        cols="5" cellspacing="0" cellpadding="0">
  79 <tr valign="top" align="left">
  80 <td width="11%"></td>
  81 <td width="2%">
  82
  83 <p><b>&minus;c</b></p>
  84 </td>
  85 <td width="5%"></td>
  86 <td width="80%">
  87
  88 <p>Specify a compression scheme to use when writing image
  89 data: <b>&minus;c none</b> for no compression (the default),
  90 <b>-c packbits</b> for the PackBits compression algorithm,
  91 <b>-c zip</b> for the Deflate compression algorithm, <b>-c
  92 jpeg</b> for the JPEG compression algorithm, and <b>&minus;c
  93 lzw</b> for Lempel-Ziv &amp; Welch.</p>
  94 </td>
  95 <td width="0%">
  96 </td>
  97 <tr valign="top" align="left">
  98 <td width="11%"></td>
  99 <td width="2%">
 100
 101 <p><b>&minus;r</b></p>
 102 </td>
 103 <td width="5%"></td>
 104 <td width="80%">
 105
 106 <p>Write data with a specified number of rows per strip; by
 107 default the number of rows/strip is selected so that each
 108 strip is approximately 8 kilobytes.</p>
 109 </td>
 110 <td width="0%">
 111 </td>
 112 <tr valign="top" align="left">
 113 <td width="11%"></td>
 114 <td width="2%">
 115
 116 <p><b>&minus;b</b></p>
 117 </td>
 118 <td width="5%"></td>
 119 <td width="80%">
 120
 121 <p>Process the image one block (strip/tile) at a time
 122 instead of by reading the whole image into memory at once.
 123 This may be necessary for very large images on systems with
 124 limited RAM.</p>
 125 </td>
 126 <td width="0%">
 127 </td>
 128 <tr valign="top" align="left">
 129 <td width="11%"></td>
 130 <td width="2%">
 131
 132 <p><b>&minus;n</b></p>
 133 </td>
 134 <td width="5%"></td>
 135 <td width="80%">
 136
 137 <p>Drop the alpha component from the output file, producing
 138 a pure RGB file. Currently this does not work if the -b flag
 139 is also in effect.</p>
 140 </td>
 141 <td width="0%">
 142 </td>
 143 </table>
 144 <a name="SEE ALSO"></a>
 145 <h2>SEE ALSO</h2>
 146 <!-- INDENTATION -->
 147 <table width="100%" border=0 rules="none" frame="void"
 148        cols="2" cellspacing="0" cellpadding="0">
 149 <tr valign="top" align="left">
 150 <td width="8%"></td>
 151 <td width="91%">
 152 <p><b>tiff2bw</b>(1), <b>TIFFReadRGBAImage</b>(3t),
 153 <b>libtiff</b>(3)</p>
 154 <!-- INDENTATION -->
 155 <p>Libtiff library home page:
 156 <b>http://www.remotesensing.org/libtiff/</b></p>
 157 </td>
 158 </table>
 159 <hr>
 160 </body>
 161 </html>