TIFFSV(1) USER COMMANDS TIFFSV(1)
NAME
tiffsv - save an image from the framebuffer in a TIFF file
(Silicon Graphics version)
SYNOPSIS
tiffsv [ options ] output.tif [ x1 x2 y1 y2 ]
DESCRIPTION
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 (PlanarConfigura-
tion=1), compressed with the Lempel-Ziv & Welch algorithm
(Compression=5), and with each strip no more than 8 kilo-
bytes. These characteristics can be overriden, or expli-
citly specified with the options described below.
OPTIONS
-b Save the image as a greyscale image as if it were pro-
cessed by tiff2bw(1). This option is included for com-
patibility with the standard scrsave(6D) program.
-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 (default).
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.
-p 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.
-r 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.
NOTE
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
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TIFFSV(1) USER COMMANDS TIFFSV(1)
shell script called scrsave that invokes tiffgt with the
appropriate options.
BUGS
If data are saved compressed and in separate planes, then
the rows in each strip is silently set to one to avoid limi-
tations in the libtiff(3) library.
SEE ALSO
scrsave(6D) pal2rgb(1), tiffdump(1), tiffgt(1), tiffinfo(1),
tiffcp(1), tiffmedian(1), libtiff(3)
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