TIFFCP(1) User Commands TIFFCP(1)

NAME

tiffcp - copy (and possibly convert) a TIFF file

SYNOPSIS

tiffcp [ options ] src1.tif ... srcN.tif dst.tif

DESCRIPTION

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.

OPTIONS

-a Append to an existing output file instead of overwriting it.

-b image
subtract the following monochrome image from all others
processed. This can be used to remove a noise bias from a set
of images. This bias image is typically an image of noise the
camera saw with its shutter closed.

-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, zip for
Deflate compression, lzma for LZMA2 compression, jpeg for
baseline JPEG compression, g3 for CCITT Group 3 (T.4)
compression, g4 for CCITT Group 4 (T.6) compression, or sgilog
for SGILOG 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, Deflate and LZMA2 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. A value 3 is for
floating point predictor which you can use if the encoded data
are in floating point format. 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.

Deflate and LZMA2 encoders support various compression levels
(or encoder presets) set as character ``p'' and a preset
number. ``p1'' is the fastest one with the worst compression
ratio and ``p9'' is the slowest but with the best possible
ratio; e.g. -c zip:3:p9 for Deflate encoding with maximum
compression level and floating point predictor.

For the Deflate codec, and in a libtiff build with libdeflate
enabled, ``p12`` is actually the maximum level.

For the Deflate codec, and in a libtiff build with libdeflate
enabled, ``s0`` can be used to require zlib to be used, and
``s1`` for libdeflate (defaults to libdeflate when it is
available).

-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.

-i Ignore non-fatal read errors and continue processing of the
input file.

-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.

-o offset
Set initial directory offset.

-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 (or when value 0 is
specified), tiffcp attempts to set the rows/strip that no more
than 8 kilobytes of data appear in a strip. If you specify
special value -1 it will results in infinite number of the
rows per strip. The entire image will be the one strip in that
case.

-s Force the output file to be written with data organized in
strips (rather than tiles).

-t Force the output file to be written with 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. tiffcp attempts to set the tile
dimensions so that no more than 8 kilobytes of data appear in
a tile.

-x Force the output file to be written with PAGENUMBER value in
sequence.

-8 Write BigTIFF instead of classic TIFF format.

-,=character
substitute character for `,' in parsing image directory
indices in files. This is necessary if filenames contain
commas. Note that -,= with whitespace immediately following
will disable the special meaning of the `,' entirely. See
examples.

-m size
Set maximum memory allocation size (in MiB). The default is
256MiB. Set to 0 to disable the limit.

EXAMPLES

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.)

To extract a selected set of images from a multi-image TIFF file, the
file name may be immediately followed by a `,' separated list of
image directory indices. The first image is always in directory 0.
Thus, to copy the 1st and 3rd images of image file ``album.tif'' to
``result.tif'':
tiffcp album.tif,0,2 result.tif

A trailing comma denotes remaining images in sequence. The following
command will copy all image with except the first one:
tiffcp album.tif,1, result.tif

Given file ``CCD.tif'' whose first image is a noise bias followed by
images which include that bias, subtract the noise from all those
images following it (while decompressing) with the command:
tiffcp -c none -b CCD.tif CCD.tif,1, result.tif

If the file above were named ``CCD,X.tif'', the -,= option would be
required to correctly parse this filename with image numbers, as
follows:
tiffcp -c none -,=% -b CCD,X.tif CCD,X%1%.tif result.tif

SEE ALSO

pal2rgb(1), tiffinfo(1), tiffcmp(1), tiffmedian(1), tiffsplit(1),
libtiff(3TIFF)

Libtiff library home page: http://www.simplesystems.org/libtiff/

libtiff February 24, 2007 TIFFCP(1)