pfsoutppm(1)pfsoutppm(1)NAME
pfsoutppm, pfsouttiff, pfsoutrgbe, pfsoutexr - Write images or frames
in one of the several formats
SYNOPSISpfsoutppm (<file> [--srgb] [--frames <range>]) [<file>...]
pfsouttiff (<file> [--srgb] [--frames <range>]) [<file>...]
pfsoutrgbe (<file> [--frames <range>]) [<file>...]
pfsoutexr (<file> [--frames <range>]) [<file>...]
DESCRIPTION
This command can be used to write pfs frames piped to standard input in
one of the several recognized formats. See the manual page of pfsinppm
to get a list of available formats.
To write images to standard output use a single dash '-' instead of
filename.
Each file name can contain a %d pattern, which is substituted with
frame numbers. The pattern has the same syntax as C printf command. For
example, you can use %04d to make the frame number four digit with pro‐
ceedings zeros. You can select the frames using the following options
(the options must be always given after the file name):
--frames <range>
Range is given in mathlab / octave format:
startframe:step:endframe
Frame numbers start with startframe (default 0), are increased
by step (default 1) and stop at endframe You can skip one of
those values, for example 1:100 for frames 1,2,...,100 and 0:2:
for frame 0,2,4,... up to the last file that exists.
--srgb, -s
Apply the sRGB non-linearity (approximately 2.2 gamma) before
writing a file. This can be used instead of using pfsgamma -g
2.2 to store the result of some tone-mapping operators. The
option will compress contrast to make sure that tone values are
properly shown on a display. It should be only used with lin‐
earized (not gamma corrected) images that are normalized to the
0-1 range.
--bit-depth <val>, -b <val>
Enforce bit-depth (per color channel). The allowed values are
from 8 to 32. If not specified, the bit depth from the pfs
stream ('BITDEPTH' tag) will be used instead. If the 'BITDEPTH'
tag is missing, the ImageMagick default value will be used (usu‐
ally 16). The bit depth of actually stored file may be lower of
that specified, if the file format does not support higher bit
depths.
EXAMPLES
pfsin memorial.tiff | pfsoutrgbe memorial.hdr
Converts from one HDR format to another
pfsin test.jpg | pfsout test.png
Convert from one image format to another.
pfsin --linear test.jpg | pfsout --srgb test.png
The same as above, but apply inverse gamma correction after
reading an image (--linear) and then apply gamma correction
before writing an image (--srgb).
SEE ALSOpfsout(1)pfsinppm(1)BUGS
Writing TIFF files with pfsouttiff seems to be broken, but pfsoutimg‐
magick can be used instead. pfsout will attempt to use pfsoutimgmagick
and fall back to pfsouttiff if pfstools were not compiled with
ImageMagick.
Please report bugs and comments on implementation to the discussion
group http://groups.google.com/group/pfstools
pfsoutppm(1)
