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   6 <title>TIFF Tools Overview
</title> 
   9 <h1><font face=
"Arial, Helvetica, Sans"><img src=
"images/quad.jpg" 
  10 width=
"144" height=
"108" align=
"left" border=
"1" hspace=
"6"> TIFF
 
  11 Tools Overview
</font></h1> 
  12 <p>This software distribution comes with a small collection of
 
  13 programs for converting non-TIFF format images to TIFF and for
 
  14 manipulating and interogating the contents of TIFF images. Several
 
  15 of these tools are useful in their own right. Many of them however
 
  16 are more intended to serve as programming examples for using the
 
  18 <h3>Device-dependent Programs
</h3> 
  19 There are two device-dependent programs that serve as simple
 
  20 examples for writing programs to display and save TIFF images.
 
  21 <table border 
cellpadding=
"3"> 
  23 <td valign=
"top" width=
"10%"> 
  24 <tt>tiffgt
    </tt></td> 
  25 <td>Display the contents of one or more TIFF images using OpenGL.
 
  26 The software makes extensive use of the 
<tt>TIFFRGBAImage
</tt> 
  27 facilities described elsewhere.
</td> 
  30 <td valign=
"top" width=
"10%"><tt>tiffsv
</tt></td> 
  31 <td>A program to save all or part of a screen dump on a Silicon
 
  32 Graphics system. As for 
<tt>tiffgt
</tt> this code, while written to
 
  33 use the IRIS GL, can be easily tailored to other devices.
</td> 
  36 <h3>Device-independent Programs
</h3> 
  37 The remaining programs should be device-independent:
 
  38 <table border 
cellpadding=
"3"> 
  40 <td valign=
"top" width=
"10%"><tt>bmp2tiff
</tt></td> 
  41 <td>Convert BMP images to TIFF
</td> 
  44 <td valign=
"top" width=
"10%"><tt>fax2ps
</tt></td> 
  45 <td>Convert a Group 
3- or Group 
4- compressed TIFF to PostScript
 
  46 that is significantly more compressed than is generated by
 
  47 <tt>tiff2ps
</tt> (unless 
<tt>tiff2ps
</tt> writes PS Level II)
</td> 
  50 <td valign=
"top" width=
"10%"><tt>fax2tiff
</tt></td> 
  51 <td>Convert raw Group 
3 or Group 
4 facsimile data to TIFF
</td> 
  54 <td valign=
"top" width=
"10%"><tt>gif2tiff
</tt></td> 
  55 <td>A quick hack that converts GIF 
87a format images to TIFF
</td> 
  58 <td valign=
"top" width=
"10%"><tt>pal2rgb
</tt></td> 
  59 <td>Convert a Palette-style image to a full color RGB image by
 
  60 applying the colormap
</td> 
  63 <td valign=
"top" width=
"10%"><tt>ppm2tiff
</tt></td> 
  64 <td>A quick hack that converts PPM format images to TIFF
</td> 
  67 <td valign=
"top" width=
"10%"><tt>ras2tiff
</tt></td> 
  68 <td>A quick hack that converts Sun rasterfile format images to TIFF
 
  69 -- it's less than complete
</td> 
  72 <td valign=
"top" width=
"10%"><tt>raw2tiff
</tt></td> 
  73 <td>Create a TIFF file from raw data
</td> 
  76 <td valign=
"top" width=
"10%"><tt>rgb2ycbcr
</tt></td> 
  77 <td>Convert an RGB, grayscale, or bilevel TIFF image to a YCbCr
 
  78 TIFF image; it's mainly provided for testing
</td> 
  81 <td valign=
"top" width=
"10%"><tt>sgi2tiff
</tt></td> 
  82 <td>A program to convert SGI image files to TIFF. This program is
 
  83 only useful on SGI machines as it uses 
<tt>-limage
</tt>.
</td> 
  86 <td valign=
"top" width=
"10%"><tt>thumbnail
</tt></td> 
  87 <td>Copy a bilevel TIFF to one that includes 
8-bit greyscale
 
  88 "thumbnail images" for each page; it is provided as an example of
 
  89 how one might use the 
<tt>SubIFD
</tt> tag (and the library support
 
  93 <td valign=
"top" width=
"10%"><tt>tiff2bw
</tt></td> 
  94 <td>A simple program to convert a color image to grayscale
</td> 
  97 <td valign=
"top" width=
"10%"><tt>tiff2pdf
</tt></td> 
  98 <td>Convert TIFF images to PDF
</td> 
 101 <td valign=
"top" width=
"10%"><tt>tiff2ps
</tt></td> 
 102 <td>Convert TIFF images to PostScript
</td> 
 105 <td valign=
"top" width=
"10%"><tt>tiff2rgba
</tt></td> 
 106 <td>Convert a TIFF image to RGBA color space
</td> 
 109 <td valign=
"top" width=
"10%"><tt>tiffcmp
</tt></td> 
 110 <td>Compare the contents of two TIFF files (it does not check all
 
 111 the directory information, but does check all the data)
</td> 
 114 <td valign=
"top" width=
"10%"><tt>tiffcp
</tt></td> 
 115 <td>Copy, concatenate, and convert TIFF images (e.g. switching from
 
 116 Compression=
5 to Compression=
1)
</td> 
 119 <td valign=
"top" width=
"10%"><tt>tiffdither
</tt></td> 
 120 <td>Dither a b
&w image into a bilevel image (suitable for use
 
 121 in creating fax files)
</td> 
 124 <td valign=
"top" width=
"10%"><tt>tiffdump
</tt></td> 
 125 <td>Display the verbatim contents of the TIFF directory in a file
 
 126 (it's very useful for debugging bogus files that you may get from
 
 127 someone that claims they support TIFF)
</td> 
 130 <td valign=
"top" width=
"10%"><tt>tiffinfo
</tt></td> 
 131 <td>Display information about one or more TIFF files.
</td> 
 134 <td valign=
"top" width=
"10%"><tt>tiffmedian
</tt></td> 
 135 <td>A version of Paul Heckbert's median cut program that reads an
 
 136 RGB TIFF image, and creates a TIFF palette file as a result; it's
 
 137 useful for converting full-color RGB images to 
8-bit color for your
 
 138 friends that have cheapo 
8-bit framebuffers.
</td> 
 141 <td valign=
"top" width=
"10%"><tt>tiffset
</tt></td> 
 142 <td>Set a field in a TIFF header
</td> 
 145 <td valign=
"top" width=
"10%"><tt>tiffsplit
</tt></td> 
 146 <td>Create one or more single-image files from a (possibly)
 
 147 multi-image file
</td> 
 150 <p>Check out the manual pages for details about the above
 
 153 Last updated: $Date: 
2006/
01/
03 02:
16:
07 $