pfsoutexr(1) [suse man page]

pfsoutexr(1)						      General Commands Manual						      pfsoutexr(1)

NAME

       pfsoutexr - Write images or frames in OpenEXR format

SYNOPSIS

       pfsoutexr [--compression <method>] [--keep-xyz] (<file> [--frames <range>])  [<file>...]

DESCRIPTION

       Use  this  command to write frames in OpenEXR format. Source pfs frames should be piped to the Standard Input. This command can write arbi-
       trary channels to OpenEXR, color channels XYZ however are specially handled (see option keep-xyz).

       All tags from pfs stream are stored in an OpenEXR file as String attributes. Tags assigned to channels are  stored  in  the  format  <chan-
       nel_name>:<tag_name>, so that pfsinexr can later restore tags in the appropriate channels.

       The  depth channel DEPTH is renamed to Z to keep compatibility with pfsinexr. If the luminance is absolute (tag LUMINANCE set to ABSOLUTE),
       WhiteLuminance attribute in OpenEXR file is set to 1.

       Details on the format of the pattern file names, which are used for saving multiple frames, can be found in the manual page of pfsoutppm.

       --compression <method>, -c <method>
	      Use one the the available compression methods:

	      NO - no compression

	      RLE - run length encoding

	      ZIPS - zlib compression, one scan line at a time

	      ZIP - zlib compression, in blocks of 16 scan lines

	      PIZ - piz-based wavelet compression (default)

	      PXR24 - lossy 24-bit float compression

       --keep-xyz
	      By default, color channels XYZ from pfs stream are converted to RGB color space and HALF format, which  is  a  standard  format  for
	      color  data in OpenEXR. Since Half format is 16-bit and floating points values used in pfs stream are 32-bit, this conversion causes
	      loss of precision. When keep-xyz option is specified, color channels XYZ are stored as they are without any conversion (32-bit float
	      XYZ channels). Note however, that most OpenEXR applications can recognize only RGB Half format images and can not handle 32-bit XYZ.

       --fix-halfmax
	      The  maximum value that can be stored in OpenEXR file is limited to 65504 if 16-bit HALF float is used (color channels are stored by
	      default in this format unless --keep-xyz switch is specified). If the luminance data is  calibrated  in  absolute  values  (cd/m^2),
	      pixel  values  can  easily exceed 65504. To avoid clamping large pixel values, pfsoutexr can rescale data to the range that is valid
	      for 16-bit HALF float format when --fix-halfmax switch is specified. If this switch is missing,  a  warning  message  is	displayed.
	      Scale  factor  used for rescaling is stored in OpenEXR file as OpenEXR standard attribute WhiteLuminance, so that pfsinexr can later
	      restore the absolute values.

EXAMPLES

	pfsin memorial.hdr | pfsoutexr memorial.exr

	      Converts from one HDR format to another

SEE ALSO

       pfsout(1) pfsoutppm(1) pfsinexr(1)

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

																      pfsoutexr(1)

Check Out this Related Man Page

pfsoutppm(1)						      General Commands Manual						      pfsoutppm(1)

NAME

       pfsoutppm, pfsouttiff, pfsoutrgbe, pfsoutexr - Write images or frames in one of the several formats

SYNOPSIS

       pfsoutppm (<file> [--srgb] [--frames <range>])  [<file>...]

       pfsouttiff (<file> [--srgb] [--frames <range>])	[<file>...]

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

       pfsoutexr (<file> [--frames <range>])  [<file>...]

DESCRIPTION

       This  command can be used to write pfs frames piped to standard input in one of the several recognized formats. See the manual page of pfs-
       inppm to get a list of available formats.

       To write images to standard output use a single dash '-' instead of filename.

       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 the following options
       (the options must be always given after the file name):

       --frames <range>
	      Range is given in mathlab / octave format:

	      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.

       --srgb, -s
	      Apply  the  sRGB non-linearity (approximately 2.2 gamma) before writing a file. This can be used instead of using pfsgamma -g 2.2 to
	      store the result of some tone-mapping operators. The option will compress contrast to make sure that tone values are properly  shown
	      on a display. It should be only used with linearized (not gamma corrected) images that are normalized to the 0-1 range.

       --bit-depth <val>, -b <val>
	      Enforce  bit-depth  (per	color  channel).  The allowed values are from 8 to 32. If not specified, the bit depth from the pfs stream
	      ('BITDEPTH' tag) will be used instead. If the 'BITDEPTH' tag is missing, the ImageMagick default value will be  used  (usually  16).
	      The bit depth of actually stored file may be lower of that specified, if the file format does not support higher bit depths.

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.

	pfsin --linear test.jpg | pfsout --srgb test.png
	      The same as above, but apply inverse gamma correction after reading an image (--linear) and then apply gamma correction before writ-
	      ing an image (--srgb).

SEE ALSO

       pfsout(1) pfsinppm(1)

BUGS

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

																      pfsoutppm(1)

Linux and UNIX Man Pages

pfsoutexr(1) [suse man page]

Check Out this Related Man Page