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pfsclamp(1)							   pfsclamp(1)

NAME
       pfsclamp	 -  Clamp  color and luminance channel values to be within the
       specified range

SYNOPSIS
       pfsclamp [--min <minimum>] [--max  <maximum>]  [--percentile]  [--zero]
       [--rgb]

DESCRIPTION
       Use  this command to clamp values of luminance and color channels to be
       within the specified range. I.e. if a value in the channel is above the
       specified  maximum  or below specified minimum, set the value to either
       minimum or maximum.

       The command operates directly on XYZ channels.

OPTIONS
       --min <val>

	      Lower bound for clamping. Default value: 0.0001 (10^-4)

       --max <val>

	      Upper bound for clamping. Default value: 100000000 (10^8)

       --percentile, -p

	      Treat given min and max values as a percentile.

       --zero, -z

	      Set values out of clamping range to zero, instead of setting  to
	      specified maximum and minimum.

       --rgb

	      Perform clamping in RGB space.

EXAMPLES
       pfsin memorial.hdr | pfsclamp | pfsout memorial_cl.hdr

	      Remove  possible	out-of-range  values, for examples zeros, from
	      memorial image.

       pfsin memorial.hdr | pfsclamp --max 0.95 -p | pfsout memorial_cl.hdr

	      Remove 5% of the brightest pixels from the original image.

SEE ALSO
       pfsin(1) pfsout(1)

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

								   pfsclamp(1)

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