pfsinexr - Load images or frames in OpenEXR format
pfsinexr [--keep-rgb] (<file> [--frames <range>] [--skip-missing]) [<file>...]
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 assumed 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.
pfsin memorial.exr | pfsout memorial.hdr
Converts from one HDR format to another
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
pfsin(1) pfsinppm(1) pfsoutexr(1)