TIFFSV(1) General Commands Manual 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 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.
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 stan-
dard 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.
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 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(3TIFF) library.
SEE ALSO
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/
libtiff September 20, 2005 TIFFSV(1)