04-20-2016
It seems working. Thank you.
@Yoda, It seems working. Thank you.
@Yoda, could you please add explanation to each line? Thank you.
Last edited by wuhuai; 04-22-2016 at 11:27 AM..
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LEARN ABOUT DEBIAN
pfsclamp
pfsclamp(1) General Commands Manual 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)