Gamma

Description

Returns or sets the gamma correction factor for the image.


Syntax

[VB]
objActiveGige.Gamma [= Value]

[C/C++]
HRESULT get_Gamma( float *pValue );
HRESULT put_Gamma( float Value );


Data Type [VB]

Single

Parameters [C/C++]

pValue [out,retval]

Pointer to the current gamma factor

Value [in]

The gamma factor to be set

Return Values

S_OK

Success

E_NOINTERFACE

The feature is not available for the selected camera

E_INVALIDARG

The value is out of range

E_FAIL

Failure to set the feature value

Example

The following VB example sets the Gamma factor to 1.2

ActiveGige1.Gamma = 1.2

Remarks

This property changes the gamma correction factor of the camera's circuitry. The gamma correction modifies an image by applying standard, nonlinear gamma curves to the intensity scale. Increasing the gamma value will lighten the video and increase the contrast in its darker areas. The valid range of the gamma values can be obtained by the GetFeatureMin and GetFeatureMax methods.

Note that the property is available only if the currently selected camera supports the Gamma feature.