NAME¶
pfsinexr - Load images or frames in OpenEXR format
SYNOPSIS¶
pfsinexr [--keep-rgb] (<file> [--frames <range>]
[--skip-missing]) [<file>...]
DESCRIPTION¶
Use this command to read frames in OpenEXR format. The frames are converted to
pfs stream and send to the standard output. This command can read arbitrary
channels from OpenEXR files; color channels XYZ are however specially handled
(see option
keep-rgb).
pfsinexr reads also all string attributes from OpenEXR file and write them as
tags in pfs stream. Attributes of other types are ignored. If attribute name
contains a colon (:), the part before colon is treated as a channel name and
the attribute is assigned to that channel (similar notation as command line
argument of pfstag program).
pfsinexr recognizes OpenEXR standard attribute
WhiteLuminance and
multiplies the data by that value to get absolute luminance values (see also
--fix-halfmax switch in pfsoutexr). Additionally the tag
LUMINANCE is set to
ABSOLUTE unless OpenEXR files contains
attribute
LUMINANCE set to semething else. That is the channel
Y
is assumued to represent absolute luminance levels in cd/m^2.
If an OpenEXR file contains 'Z' channel, it is renamed to 'DEPTH' to avoid
conflict with the Z color channel for the XYZ color space.
Details on the format of the pattern file names, which are used for reading
multiple frames, can be found in the manual page of pfsinppm.
To automatically recognize a file format from the extension, use
pfsin
command instead.
- --keep-rgb
- By default, color channels R, G and B from an OpenEXR file are converted
to XYZ color space, which is suggested format for color data in pfs. When
keep-rgb option is specified, color channels RGB are stored as they
are without any conversion.
EXAMPLES¶
-
pfsin memorial.exr | pfsout memorial.hdr
-
Converts from one HDR format to another
BUGS¶
pfsinexr and pfsoutexr can not take stdin / stdout as an input/output (dash '-'
instead of file name).
Please report bugs and comments on implementation to the discussion group
http://groups.google.com/group/pfstools
SEE ALSO¶
pfsin(1) pfsinppm(1) pfsoutexr(1)