1pfsclamp(1)                 General Commands Manual                pfsclamp(1)
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NAME

6       pfsclamp  -  Clamp  color and luminance channel values to be within the
7       specified range
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SYNOPSIS

10       pfsclamp [--min <minimum>] [--max  <maximum>]  [--percentile]  [--zero]
11       [--rgb]
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DESCRIPTION

14       Use  this command to clamp values of luminance and color channels to be
15       within the specified range. I.e. if a value in the channel is above the
16       specified  maximum  or below specified minimum, set the value to either
17       minimum or maximum.
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19       The command operates directly on XYZ channels.
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OPTIONS

22       --min <val>
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24              Lower bound for clamping. Default value: 0.0001 (10^-4)
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27       --max <val>
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29              Upper bound for clamping. Default value: 100000000 (10^8)
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32       --percentile, -p
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34              Treat given min and max values as a percentile.
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37       --zero, -z
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39              Set values out of clamping range to zero, instead of setting  to
40              specified maximum and minimum.
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43       --rgb
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45              Perform clamping in RGB space.
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EXAMPLES

49       pfsin memorial.hdr | pfsclamp | pfsout memorial_cl.hdr
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51              Remove  possible  out-of-range  values, for examples zeros, from
52              memorial image.
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55       pfsin memorial.hdr | pfsclamp --max 0.95 -p | pfsout memorial_cl.hdr
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57              Remove 5% of the brightest pixels from the original image.
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SEE ALSO

60       pfsin(1) pfsout(1)
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BUGS

63       Please  report  bugs  and  comments  to  Rafal  Mantiuk   <mantiuk@mpi-
64       sb.mpg.de> and Grzegorz Krawczyk <krawczyk@mpi-sb.mpg.de>.
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68                                                                   pfsclamp(1)