pfsclamp1
Clamp color and luminance channel values to be within the specified range
Usage
pfsclamp [--min
<minimum>]
[--max
<maximum>]
[--percentile]
[--zero]
[--rgb]
Overview
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. |
Releases
Unchanged in 8 releases since Debian 5.0 (Lenny).