'Declaration

<DefaultValueAttribute(1)>
<DescriptionAttribute("The green gamma value.")>
Public Property GreenGamma As Double

[DefaultValue(1)]
[Description("The green gamma value.")]
public double GreenGamma { get; set; }

[DefaultValue(1)]
[Description("The green gamma value.")]
public: __property double get_GreenGamma();
public: __property void set_GreenGamma(
   double value
);

[DefaultValue(1)]
[Description("The green gamma value.")]
public:
property double GreenGamma {
   double get();
   void set(double value);
}

1 - the command will NOT apply the gamma correction to the green channel of image; other value - the command will apply the gamma correction to the green channel of image.
Default value is 1.