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pfsin - Online in the Cloud

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This is the command pfsin 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


pfsin - Read an image in one of the several formats and write pfs stream to the standard
output

SYNOPSIS


pfsin <file> [<file>...]

DESCRIPTION


This command can be used to read high- or low- dynamic range image in several recognized
formats and output pfs stream on standard output. The pfs stream is usually piped to
another program for further processing (see examples). To get a list of recognized formats
and extensions, execute:

pfsin --help

This command is a front-end for pfsin* programs for reading images: pfsinrgbe, pfsinexr,
etc. Based on the file extension, appropriate program is executed. If two different file
format are given as parameters, two different program for loading images are executed.
Additional options starting with dash '-' can be passed to pfsin* programs. The following
rules apply for passing the options: the options given before any image file name (or %d
pattern) are passed to all pfsin* programs. Options given after image file name are only
passed to the program executed for that file(s). Note also that all option that take an
argument (except --frames) must given in the form --option=value, that is without a space
between an option and its argument.

OPTIONS


The following options are shared by most pfsin* commands, although some may not accept
--absolute and may ignore --linear.

--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 frames 0,2,4,... up to the last file that exists.

--skip-missing
Skip up to ten frames in a row if corresponding files are missing. Otherwise the
program stops reading sequence at the first file that does not exists. This switch
does not apply to the first frame in a sequence. This switch can be useful if there
is a rendered animation where some of the frame has not been generated.

--linear, -l
Converts pixel values to linear luminance (XYZ), assuming the sRGB color space for
the input image. The maximum pixel value (255,255,255) is mapped to Y=1. LUMINANCE
tag is set to RELATIVE.

--absolute <max_lum>, -a <max_lum>
--absolute converts pixel values to an absolute linear luminance (XYZ), that is the
color space, in which channel Y contains luminance given in cd/m^2. The sRGB color
space is assumed for the input image. The maximum pixel value (255,255,255) is
mapped to Y=<max_lum>. <max_lum> is typically set to 80 [cd/m^2] for a CRT monitor.
LUMINANCE tag is set to ABSOLUTE. --absolute process images almost the same as
--relative, but additionally it scales all pixels by <max_lum>.

EXAMPLES


pfsin memorial.pic | pfsview

See a hdr image in Radiance format (RGBE).

pfsin memorial.pic | pfstmo_drago03 | pfsout memorial.jpeg

Tone map a hdr image and save it as JPEG.

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