NAME

       pfstmo_mantiuk06 - Tone mapping in the contrast domain

SYNOPSIS

       pfstmo_mantiuk06   [--factor   <val>]  [--equalize-contrast  <val>]  [--saturation  <val>]
       [--verbose] [--quiet] [--help]

DESCRIPTION

       This command  implements  two  tone  mapping  operators:  contrast  mapping  and  contrast
       equalization.  Both operators can produce very sharp images (sometimes non-photorealistic)
       while minimizing contrast reversal (halo artifacts). More information on  these  operators
       can be found in:

              Rafal Mantiuk, Karol Myszkowski, Hans-Peter Seidel.
              A Perceptual Framework for Contrast Processing of High Dynamic Range Images
              In: ACM Transactions on Applied Perception 3 (3), pp. 286-308, 2006.
              http://www.mpi-inf.mpg.de/~mantiuk/contrast_domain/

       This version contains several performance improvements made by Ed Brambley.

       If you find this TMO useful in your research project, please cite the paper above.

       The result of this TMO requires gamma correction.

OPTIONS

       --equalize-contrast <val>, -e <val>
              Use  the  contrast  equalization  algorithm.  If  this option is not specified, the
              contrast mapping algorithm  will  be  used.  The  contrast  equalization  algorithm
              requires  scaling  parameter  that controls the amount sharpenning, which can range
              from 0.1 (very sharp) to 1 (less sharp).

              contrast equalization results in very sharp, but also less natural images. contrast
              equalization may also enhance noise in low-quality images.

       --factor <val>, -f <val>
              Contrast scaling factor (values 0-1) determines how much contrast magnitudes should
              be reduced. This option cannot be used  with  equalize-contrast.  The  lower  value
              results in a sharper image. Default value: 0.3

       --saturation <val>, -s <val>
              Saturation   correction   (values   0-2).  The  lower  value  results  in  stronger
              desaturation. Default value: 0.8

       --verbose, -v
              Print additional information during program execution.

       --quiet, -q
              Do not display progress report.

       --help, -h
              Print list of commandline options.

EXAMPLES

       pfsin memorial.hdr | pfstmo_mantiuk06 -f 0.5 | pfsgamma -g 2.2  | pfsout memorial.png

              Tone map an image using contrast mapping and save it in the PNG format.

       pfsin memorial.hdr | pfstmo_mantiuk06 -e 0.5 | pfsgamma -g 2.2  | pfsout memorial.png

              The same as above, but use the contrast equalization algorithm.

       pfsin memorial.hdr | pfstmo_mantiuk06 -f 0.5 -s 1 | pfsview

              For optimal results you can output the result to pfsview and  manually  adjust  the
              dynamic  range  window. Then save the image in pfsview by selecting 'Save image...'
              from the 'Frame' menu or pressing 's'.

       pfsin bridge.jpg --linear |  pfsclamp --min 0.007 | pfstmo_mantiuk06 | pfsview

              Enhance the low-dynamic range image 'bridge' and view the result. pfsclamp  command
              reduces noise for low code values.

SEE ALSO

       pfsgamma(1) pfsclamp(1) pfsin(1) pfsout(1) pfsview(1)

BUGS

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

                                                                              pfstmo_mantiuk06(1)