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TIFFSV
TIFFSV
NAME
SYNOPSIS
DESCRIPTION
OPTIONS
NOTE
BUGS
SEE ALSO
NAME
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tiffsv − save an image from the framebuffer in a
TIFF file (Silicon Graphics version)
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SYNOPSIS
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tiffsv [ options ] output.tif [
x1 x2 y1 y2 ]
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DESCRIPTION
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tiffsv saves all or part of the framebuffer in a
file using the Tag Image File Format, Revision 6.0. By
default, the image is saved with data samples packed
(PlanarConfiguration=1), compressed with the
Lempel-Ziv & Welch algorithm (Compression=5), and
with each strip no more than 8 kilobytes. These
characteristics can be overridden, or explicitly specified
with the options described below.
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OPTIONS
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−b
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Save the image as a greyscale image as if it were
processed by tiff2bw(1). This option is included for
compatibility with the standard scrsave(6D)
program.
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−c
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Specify the compression to use for data written to the
output file: none for no compression, packbits
for PackBits compression, jpeg for baseline JPEG
compression, zip for Deflate compression, and
lzw for Lempel-Ziv & Welch compression
(default).
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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.
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−p
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Specify the planar configuration to use in writing image
data. By default, tiffsv will create a new file with
the data samples packed contiguously. 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.
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−r
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Specify the number of rows (scanlines) in each strip of
data written to the output file. By default, tiffsv
attempts to set the rows/strip that no more than 8 kilobytes
of data appear in a strip.
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NOTE
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Except for the use of TIFF, this program
is equivalent to the standard scrsave program. This
means, for example, that you can use it in conjunction with
the standard icut program simply by creating a link
called scrsave, or by creating a shell script called
scrsave that invokes tiffgt with the
appropriate options.
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BUGS
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If data are saved compressed and in separate planes, then
the rows in each strip is silently set to one to avoid
limitations in the libtiff(3TIFF) library.
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SEE ALSO
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scrsave(6D) pal2rgb(1), tiffdump(1),
tiffgt(1), tiffinfo(1), tiffcp(1),
tiffmedian(1), libtiff(3TIFF)
Libtiff library home page:
http://www.remotesensing.org/libtiff/
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