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
-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, g3 for CCITT Group 3 (T.4) compression, 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 pred-
ictor value. A predictor value of 2 causes each scan-
line of the output image to undergo horizontal dif-
ferencing 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.
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TIFFCP(1) USER COMMANDS TIFFCP(1)
-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 Fil-
lOrder 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.
-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 sam-
ples 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.
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.)
SEE ALSO
pal2rgb(1), tiffinfo(1), tiffcmp(1), tiffmedian(1), tiffs-
plit(1), libtiff(3)
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