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)