unu-gamma - Man Page
brighten or darken values with a gamma
Synopsis
unu gamma -g,--gamma <gamma> [-min,--minimum <value>] [-max,--maximum <value>] [-blind8 <bool>] [-i,--input <nin>] [-o,--output <nout>]
Description
Brighten or darken values with a gamma. Just as in xv, the gamma value here is actually the reciprocal of the exponent actually used to transform the values.
- Uses nrrdArithGamma
Options
- -g <gamma> , --gamma <gamma>
1.0 brightens; gamma < 1.0 darkens. Negative gammas invert values (like in xv). (double)
- -min [<value>] , --minimum [<value>]
Value to implicitly map to 0.0 prior to calling pow(3). Defaults to lowest value found in input nrrd. (double)
- -max [<value>] , --maximum [<value>]
Value to implicitly map to 1.0 prior to calling pow(3). Defaults to highest value found in input nrrd. (double)
- -blind8 <bool>
Whether to know the range of 8-bit data blindly (uchar is always [0,255], signed char is [-128,127]). (bool); default: “true”
- -i <nin> , --input <nin>
input nrrd
- -o <nout> , --output <nout>
output nrrd (string); default: “-”