Provided by: pfstools_2.1.0-3build4_amd64 bug


       pfsin  -  Read an image in one of the several formats and write pfs stream to the standard


       pfsin <file> [<file>...]


       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.


       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:


              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 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>.


       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.


       pfsout(1) pfsinppm(1)


       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