tiffset − set or unset a field in a TIFF header
tiffset [ options ] filename.tif
Tiffset sets the value of a TIFF header to a specified value or removes an existing setting.
−d dirnumber
change the current directory (starting at 0).
−s tagnumber [ count ] value ...
Set the value of the named tag to the value or values specified.
−sd diroffset
change the current directory by offset.
−sf tagnumber filename
Set the value of the tag to the contents of filename. This option is supported for ASCII tags only.
−u tagnumber
Unset the tag.
The following example sets the image description tag (270) of a.tif to the contents of the file descrip:
tiffset −sf 270 descrip a.tif
The following example sets the artist tag (315) of a.tif to the string ‘‘Anonymous’’:
tiffset −s 315 Anonymous a.tif
This example sets the resolution of the file a.tif to 300 dpi:
tiffset −s 296 2 a.tif
tiffset −s 282 300.0 a.tif
tiffset −s 283 300.0 a.tif
Set the photometric interpretation of the third page of a.tif to min-is-black (ie. inverts it):
tiffset -d 2 -s 262 1 a.tif
tiffdump(1), tiffinfo(1), tiffcp(1), libtiff(3TIFF)
Libtiff library home page: http://www.simplesystems.org/libtiff/