constrast enhancement for browser image

pkg/config/config.go

@@ -8,6 +8,7 @@ import (
 type Config struct {
 	CoRegistration CoRegistrationConfig `yaml:"coregistration" mapstructure:"coregistration"`
 	Radiation      RadiationConfig      `yaml:"radiation" mapstructure:"radiation"`
+	BrowserImg     BrowserImgConfig     `yaml:"browser_img" mapstructure:"browser_img"`
 	LogLevel       logrus.Level         `yaml:"log_level" mapstructure:"log_level"`
 }
 
@@ -33,6 +34,12 @@ type RadiationConfig struct {
 	HFBandStopWidth     int     `yaml:"hf_band_stop_width" mapstructure:"hf_band_stop_width"`
 }
 
+type BrowserImgConfig struct {
+	Enhancement        string  `yaml:"enhancement" mapstructure:"enhancement"`
+	CumulativeCutLower float64 `yaml:"cumulative_cut_lower" mapstructure:"cumulative_cut_lower"`
+	CumulativeCutUpper float64 `yaml:"cumulative_cut_upper" mapstructure:"cumulative_cut_upper"`
+}
+
 var GCONFIG Config
 
 func init() {
@@ -58,5 +65,10 @@ func init() {
 			HfRadiusRatio:       0.49,
 			HFBandStopWidth:     24,
 		},
+		BrowserImg: BrowserImgConfig{
+			Enhancement:        "StretchToCumulativeCutMinMax",
+			CumulativeCutLower: 0.01,
+			CumulativeCutUpper: 0.99,
+		},
 	}
 }