tiffsv
TIFFSV(1) 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 (PlanarConfiguration=1), compressed with the Lem-
pel-Ziv & Welch algorithm (Compression=5), and with each strip no more
than 8 kilobytes. These characteristics can be overriden, or explic-
itly specified with the options described below.
OPTIONS
-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 compres-
sion, jpeg for baseline JPEG compression, zip for Deflate com-
pression, 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 out-
put 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 sepa-
rate 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 con-
junction 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.
BUGS
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.
SEE ALSO
scrsave(6D) pal2rgb(1), tiffdump(1), tiffgt(1), tiffinfo(1), tiffcp(1),
tiffmedian(1), libtiff(3)
October 15, 1995 TIFFSV(1)
