'Declaration
 
Public Sub Gamma( _
   ByVal gamma As Single _
) 

'Usage
 
Dim instance As Processor
Dim gamma As Single
 
instance.Gamma(gamma)

public void Gamma( 
   float gamma
)

public: void Gamma( 
   float gamma
) 

public:
void Gamma( 
   float gamma
) 

Parameters

gamma

A float value which represents a single value that determines the magnitude of the gamma correction.

Valid values are between 0.1 and 10.0.

Because monitors output pixel brightness in a non-linear fashion, the image brightness is not accurately portrayed. Adjusting the gamma enables you to adjust pixel brightness to compensate for the linitations of the display device. The gamma value represents the ratio of input vs. output brightness. A gamma of one represents a linear relationship between input and output brightness - no change is made to the image. A gamma other than one represents a parabolic relationship between input and output brightness.

Applying a gamma = 1 results in no change to the image.

Applying a gamma greater than one results in brightening the image, with mid-brightness levels increased more than extremely dark or light pixels.

Applying a gamma less than one results in darkening the image, with mid-brightness levels decreased more than extremely dark or light pixels.

Reference