pfsoutjpeghdr(1) [suse man page]

pfsoutjpeghdr(1)					      General Commands Manual						  pfsoutjpeghdr(1)

NAME

       pfsoutjpeghdr - Write images or frames in JPEG-HDR format

SYNOPSIS

       pfsoutjpeghdr (<file> [--linear] [--quality <val>] [--correction <correct>] [--frames <range>])	[<file>...]

DESCRIPTION

       Use  this  command to write JPEG file with HDR extension. This software makes use of the High Dynamic Range Imaging Library from Sunnybrook
       Technologies Inc. (c) Sunnybrook Inc. 2005

OPTIONS

       --quality <val>, -q <val>
	      The --quality setting controls the overall compression/quality trade-off, with 100 being the maximum setting, producing  the  lowest
	      losses  and  the largest output files.  Quality settings below 70 may result in significant image degradation, and should be avoided
	      in critical applications. Default: --quality=90

       --correction <correct>, -c <correct>
	      The --correction setting controls the algorithm used during downsampling of the HDR ratio image data.  The default precorrect option
	      compensates  for	resampling  errors by adjusting the tone-mapped image to maximize the accuracy of the HDR result.  This option may
	      sometimes induce modest halo artifacts in the tone-mapped image at lower quality settings.  If the tone-mapped  (backwards  compati-
	      ble)  image  is  more  important than the HDR version, the postcorrect option may be used, instead.  To avoid all artifacts from HDR
	      resampling, specify the fullsamp option. This will result in slightly larger image files. Default: --correction=precorrect

       --alpha <a>, -a <a>; --beta <b>, -b <b>
	      The --alpha and --beta settings control color desaturation during tone-mapping, which will also permits  super-saturated	colors	to
	      pass  through  safely.   (See  the appendix of the paper by Ward and Simmons cited below for details.) Use --alpha < 1 to desaturate
	      colors and --beta > 1 to enhance color saturation contrast. Any input color space will be converted to the standard YCC color  space
	      of JPEG, based on the CCIR-709 (sRGB) primaries. Default: --alpha=1, --beta=1.

EXAMPLES

	pfsin memorial.hdr | pfsoutjpeghdr memorial.jpeg

BUGS

       Please report bugs and comments to Rafal Mantiuk <mantiuk@mpi-sb.mpg.de>.

SEE ALSO

       pfsinjpeghdr(1) Subband Encoding of High Dynamic Range ImagerybyWardandSimmons (www.anyhere.com/gward/papers/apgv04)

																  pfsoutjpeghdr(1)

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 (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-qual-
	      ity 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 0-1). 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)