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tiffcp - copy (and possibly convert) a
TIFF
file
tiffcp [ options ] src1.tif ... srcN.tif dst.tif
tiffcp combines one or more files created according to the Tag Image File
Format, Revision 6.0 into a single TIFF
file. Because the output file may
be compressed using a different algorithm than the input files, tiffcp
is most often used to convert between different compression schemes.
By
default, tiffcp will copy all the understood tags in a TIFF
directory
of an input file to the associated directory in the output file.
tiffcp
can be used to reorganize the storage characteristics of data in a file,
but it is explicitly intended to not alter or convert the image data content
in any way.
- -B
- Force output to be written with Big-Endian byte
order. This option only has an effect when the output file is created or
overwritten and not when it is appended to.
- -C
- Suppress the use of ``strip
chopping'' when reading images that have a single strip/tile of uncompressed
data.
- -c
- Specify the compression to use for data written to the output
file: none for no compression, packbits for PackBits compression, lzw
for Lempel-Ziv & Welch compression, jpeg for baseline JPEG compression,
zip for Deflate compression, g3 for CCITT Group 3 (T.4) compression, and
g4 for CCITT Group 4 (T.6) compression. By default tiffcp will compress
data according to the value of the Compression tag found in the source
file.
- The
- CCITT
Group 3 and Group 4 compression algorithms can only be
used with bilevel data.
- Group 3 compression can be specified together with
several
- T.4-specific options: 1d for 1-dimensional encoding, 2d for 2-dimensional
encoding, and fill to force each encoded scanline to be zero-filled so
that the terminating EOL code lies on a byte boundary. Group 3-specific
options are specified by appending a ``:''-separated list to the ``g3'' option;
e.g. -c g3:2d:fill to get 2D-encoded data with byte-aligned EOL codes.
- LZW
- compression can be specified together with a predictor value. A predictor
value of 2 causes each scanline of the output image to undergo horizontal
differencing before it is encoded; a value of 1 forces each scanline to
be encoded without differencing. LZW-specific options are specified by appending
a ``:''-separated list to the ``lzw'' option; e.g. -c lzw:2 for LZW
compression with
horizontal differencing.
- -f
- Specify the bit fill order to use in writing
output data. By default, tiffcp will create a new file with the same fill
order as the original. Specifying -f lsb2msb will force data to be written
with the FillOrder tag set to LSB2MSB,
while -f msb2lsb will force data
to be written with the FillOrder tag set to MSB2LSB.
- -l
- Specify the length
of a tile (in pixels). tiffcp attempts to set the tile dimensions so that
no more than 8 kilobytes of data appear in a tile.
- -L
- Force output to be
written with Little-Endian byte order. This option only has an effect when
the output file is created or overwritten and not when it is appended
to.
- -M
- Suppress the use of memory-mapped files when reading images.
- -p
- Specify
the planar configuration to use in writing image data that has one 8-bit
sample per pixel. By default, tiffcp will create a new file with the same
planar configuration as the original. Specifying -p contig will force data
to be written with multi-sample data packed together, while -p separate
will force samples to be written in separate planes.
- -r
- Specify the number
of rows (scanlines) in each strip of data written to the output file. By
default, tiffcp attempts to set the rows/strip that no more than 8 kilobytes
of data appear in a strip.
- -s
- Force the output file to be written with
data organized in strips (rather than tiles).
- -t
- Force the output file
to be written wtih data organized in tiles (rather than strips). options
can be used to force the resultant image to be written as strips or tiles
of data, respectively.
- -w
- Specify the width of a tile (in pixels). tiffcp
attempts to set the tile dimensions so that no more than 8 kilobytes of
data appear in a tile.
The following concatenates two files and
writes the result using LZW
encoding:
tiffcp -c lzw a.tif b.tif result.tif
To convert a G3 1d-encoded TIFF
to a single strip of G4-encoded data
the following might be used:
tiffcp -c g4 -r 10000 g3.tif g4.tif
(1000 is just a number that is larger than the number of rows in the
source file.)
pal2rgb(1)
, tiffinfo(1)
, tiffcmp(1)
, tiffmedian(1)
,
tiffsplit(1)
, libtiff(3)
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