exrtools(1) [debian man page]

exrtools(1)						      General Commands Manual						       exrtools(1)

NAME

       exrtools - a collection of utilities for manipulating OpenEXR images

DESCRIPTION

       exrtools  is  a	set  of  simple  command-line  utilities  for dealing with high dynamic range images in OpenEXR format.  OpenEXR is a high
       dynamic-range (HDR) image file format developed by Industrial Light & Magic for use in computer imaging applications.

       exrtools was developed to help experiment with batch processing of HDR images for tone mapping, and it is released in the hopes that  some-
       one  may  find them useful.  Each application is small and reasonably self-contained such that the source code may be of most value to oth-
       ers.

       The biggest assumption in most of this code is that the EXR files and PNG files all use sRGB primaries and gamma function.  Fixing this	is
       not  very  difficult, and the code to fix allows for some interesting possibilities.  That said, I do not have time right now, so this will
       have to wait.

AUTHORS

       Billy Biggs <vektor@dumbterm.net>.

SEE ALSO

       exrblur(1), exrchr(1), exricamtm(1), exrnlm(1), exrnormalize(1), exrpptm(1),  exrstats(1),  exrtopng(1),  jpegtoexr(1),	pngtoexr(1),  ppm-
       toexr(1).

exrtools 0.4							   December 2003						       exrtools(1)

pfsinexr(1)						      General Commands Manual						       pfsinexr(1)

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 (sim-
       ilar 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 LUMI-
       NANCE 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)

																       pfsinexr(1)