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 (PlanarConfigura-
tion=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 differ-
encing before it is encoded; a value of 1 forces each scanline to be encoded with-
out differencing. LZW-specific options are specified by appending a ``:''-sepa-
rated list to the ``lzw'' option; e.g. -c lzw:2 for LZW compression with horizon-
-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 kilo-
bytes 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),
October 15, 1995 TIFFSV(1)