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tiffsv - save an image from the framebuffer
in a TIFF
file (Silicon Graphics version)
tiffsv [ options ]
output.tif [ x1 x2 y1 y2 ]
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 overriden,
or explicitly specified with the options described below.
- -b
- 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.
- -c
- 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).
- 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.
- -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.
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.
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(3)
library.
scrsave(6D)
pal2rgb(1)
, tiffdump(1)
,
tiffgt(1)
, tiffinfo(1)
, tiffcp(1)
, tiffmedian(1)
, libtiff(3)
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