pfsin(1)
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.
SEE ALSO
pfsout(1) pfsinppm(1)
BUGS
For LDR formats - JPEG, PNG, PNM: If pfstools are compiled without
ImageMagic support, this command currently will not handle multiple
frames given with a %d pattern.
Please report bugs and comments on implementation to the discussion
group http://groups.google.com/group/pfstools
pfsin(1)
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