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This is the command pfsoutimgmagick that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


pfsoutimgmagick - Write images or frames using Image Magick library

SYNOPSIS


pfsoutimgmagick [--linear] [--quality <val>] [--bit-depth] [--frames <range>]) <file>
[<file>...]

DESCRIPTION


This command can write images or frames in the multitude of image formats supported by the
ImageMagick library. This includes but is not limited to: BMP, JPG, PNG, GIF, EPS, TIFF,
DPX. See the manual page of ImageMagick for the full list of available formats.

pfsoutimgmagick reads images or frames in pfs format from the Standard Input and writes
them under the specified file name(s).

The input of pfsinimgmagick must be within 0-1 range. If LUMINANCE tag set is set to
RELATIVE or ABSOLUTE, the linear values will be gamma corrected, assuming sRGB color
space. Use --linear switch to disable gamma correction.

The images are stored using the bit-depth for which the ImageMagick library was compiled
(default is 16 bit). Note that some formats (for example JPEG) do not support encoding
more than 8 bits per color channel. To use higher bit-depths, store images in the PNG
format.

This command stores 'ALPHA' channel if it is present in the pfs stream.

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 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 linearized (not gamma
corrected) images that are normalized to the 0-1 range.

--quality <val>, -q <val>
Set JPEG/PNG compression level from 1 to 100. Default 75.

--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.

EXAMPLES


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).

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