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pfstmo_mantiuk06(1)	     General Commands Manual	     pfstmo_mantiuk06(1)

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  (some-
     times  non-photorealistic)  while	minimizing contrast reversal (halo arti-
     facts). 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 spec-
	    ified, 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 equal-
	    ize-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 for-
	    mat.

     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 manu-
	    ally 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)

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