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Full Discussion: Get the return value and get the output to $results
Top Forums Shell Programming and Scripting Get the return value and get the output to $results Post 302912169 by Corona688 on Wednesday 6th of August 2014 11:09:42 AM
Old 08-06-2014
Quote:
Originally Posted by yanglei_fage
I want to get the eval $* 's return value
Your explanation is circular.

"What do you hope to achieve with eval $*?" "I hope to execute eval $*"


WHY do you want to execute eval $*? What chain of logic led you here? What problem led you here?

This is extremely ill-advised in nearly all circumstances. If you ever find yourself doing things like eval $* you can be fairly sure your programming took a wrong turn somewhere.
 

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LEARN ABOUT SUSE

pfstmo_durand02

pfstmo_durand02(1)					      General Commands Manual						pfstmo_durand02(1)

NAME

       pfstmo_durand02 - Fast bilateral filtering for the display of HDR images

SYNOPSIS

       pfstmo_durand02 [--sigma-s <val>] [--sigma-r <val>] [--base-contrast <val>] [--quiet] [--verbose] [--help]

DESCRIPTION

       This command implements a tone mapping operator as described in:
	      F. Durand and J. Dorsey.
	      Fast Bilateral Filtering for the Display of High-Dynamic-Range Images.
	      In: In ACM Transactions on Graphics, 2002.

       According to paper, results of this TMO require gamma correction.

       Unless -g option is specified, this operator also employs color correction mechanism from:
	      Radoslaw Mantiuk, Rafal Mantiuk, Anna Tomaszewska, Wolfgang Heidrich.
	      Color Correction for Tone Mapping.
	      In: Computer Graphics Forum (Proc. of EUROGRAPHICS'09), 28(2), 2009.
	      http://zgk.wi.ps.pl/color_correction/

OPTIONS

       --sigma-s <val>, -s <val>
	      Sigma value for spatial kernel. Default value: 40

       --sigma-r <val>, -r<val>
	      Sigma value for range kernel. Default value: 0.4

       --base-contrast <val>, -c <val>
	      Contrast	of  the  base layer. Default value is 5.0f. Lower value causes higher contrast compression and results in darker picture -
	      can help if after tone mapping too many pixels remain saturated.

	      Increasing this value will results in brighter and more 'dynamic' picture.

       --original, -g
	      Use original algorithm as described in the paper with no extensions. For this operator the switch will disable color correction.

       --verbose
	      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_durand02 | pfsgamma -g 2.2 | pfsout memorial.png
	      Tone map image and save it in png format.

SEE ALSO

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

BUGS

       Please report bugs and comments on implementation to Grzegorz Krawczyk <krawczyk@mpi-sb.mpg.de>.

																pfstmo_durand02(1)
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