NAME

       pfsoutrgbe - Write images or frames in Radiance RGBE format

SYNOPSIS

       pfsoutrgbe [--verbose] [--radiance] [--quiet] (<file> [--frames <range>])  [<file>...]

DESCRIPTION

       Use  this  command to the incoming pfs frames (piped to standard input) to Radiance RGBE files (with .hdr
       extension).

       Each file name can contain a %d pattern, which is substituted with frame numbers.  The  pattern  has  the
       same  syntax  as C printf command. For example, you can use %04d to make the frame number four digit with
       proceedings zeros. You can select the frames using --frames option (see below).

OPTIONS

       --frames <range>
              The range of frames is given in a format similar to matlab or octave:

              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
              frame 0,2,4,... up to the last file that exists. Note that --frames option must be specified after
              the file name containing %d string.  higher bit depths.

       --radiance, -r
              Correct stored values so that the luminance is reported the same in  pfsview  and  radiance  tools
              (xview or Photospheare). See IMPORTANT NOTE below.

       --quiet, -q
              Disable  warning message about the change in handling absolute values in RGBE files. See IMPORTANT
              NOTE below.

EXAMPLES

        pfsin memorial.tiff | pfsoutrgbe memorial.hdr
              Converts from one HDR format to another

       pfsin test.jpg | pfsout test.png
              Convert from one image format to another.

SEE ALSO

       pfsout(1) pfsinppm(1)

IMPORTANT NOTE

       There is an incompatibility between viewers of RGBE format in terms of  absolute  luminance  values.  The
       ximage  viewer  from  Radiance package expects radiance values in RGBE files and multiplies the resulting
       luminance by the WHITE_EFFICACY constant equal to 179.0f to convert from radiance to luminance.

       To remain compatible with Radiance (xview and Photospheare), pfstools prior to 1.9.0 divided  red,  green
       and  blue  values  by  179 on writing and multiplied by that constant on reading RGBE files. This in turn
       caused incompatibility with other software, such as Photoshop or  HDR  toolbox.  Starting  from  pfstools
       1.9.0  this  division  / multiplication step was removed to make pfstools compatible in terms of absolute
       values with the majority of the software. The downside is that this change made luminance units) with the
       pfstools 1.9.0 or later. To avoid any mistakes because of that change, a long warning messages  is  shown
       each time pfsinrgbe or pfsoutrgbe is called. The message can be suppressed with --quiet option.

       To  enable the old functionality and read or write RGBE files with the correction for WHITE_EFFICACY, add
       --radiance option to the command line.

BUGS

       Please    report    bugs    and    comments    on    implementation    to    the     discussion     group
       http://groups.google.com/group/pfstools

                                                                                                   pfsoutrgbe(1)