Manual Reference Pages - PFSOUTPPM (1)
pfsoutppm, pfsouttiff, pfsoutrgbe, pfsoutexr - Write images or frames
in one of the several formats
pfsoutppm (<file> [--srgb] [--frames <range>]) [<file>...]
pfsouttiff (<file> [--srgb] [--frames <range>]) [<file>...]
pfsoutrgbe (<file> [--frames <range>]) [<file>...]
pfsoutexr (<file> [--frames <range>]) [<file>...]
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
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 proceedings zeros. You can select the frames using the
following options (the options must be always given after the file
--frames <range> |
Range is given in mathlab / octave format:
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 linearized (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 (usually 16). The bit depth of actually stored file
may be lower of that specified, if the file format does not support
higher bit depths.
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
Writing TIFF files with pfsouttiff seems to be broken, but pfsoutimgmagick
can be used instead. pfsout will attempt to use pfsoutimgmagick and
fall back to pfsouttiff if pfstools were not compiled with
Please report bugs and comments on implementation to
the discussion group http://groups.google.com/group/pfstools
Visit the GSP FreeBSD Man Page Interface.
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