Lines Matching refs:gamma
1637 * directly modified (EG: -negate, -gamma, -level, -annotate, -draw),
1798 if (LocaleCompare("auto-gamma",option+1) == 0)
2130 gamma;
2141 gamma=0.0;
2143 gamma+=kernel_info->values[j];
2144 gamma=1.0/(fabs((double) gamma) <= MagickEpsilon ? 1.0 : gamma);
2146 kernel_info->values[j]*=gamma;
2424 if (LocaleCompare("gamma",option+1) == 0)
2433 /* Using Gamma, via a cache */
2442 _image->gamma*=StringToDouble(arg1,(char **) NULL);
2444 /* Set gamma setting -- Old meaning of "+gamma"
2445 * _image->gamma=StringToDouble(arg1,(char **) NULL);
2601 gamma,
2614 gamma=1.0;
2616 gamma=geometry_info.xi;
2625 (void) LevelizeImage(_image,black_point,white_point,gamma,_exception);
2627 (void) LevelImage(_image,black_point,white_point,gamma,_exception);
