g_Gamma

Reference
Index

    This generator is the gamma function typically used to correct the brightness of images.

How Does It Work?

    The Gamma generator is simply a function which ramps from 0 to 100 percent.  The Correction Factor parameter controls how quickly the Gamma curve ramps up. The Correction Factor typically used to correct for PC computer monitors is .4 (that is 1/2.5).  For more information, look up "gamma correction" on the Internet.

    The standard generator parameters are included for manipulating the Gamma function.

Standard Generator Parameters

 

Amplitude

Describes the function height above and below the horizontal axis. The default value is 50.0%. Increase the function height up to 100.0% or it flatten out at 0.0%.

 

Shift

Repositions the function vertically, above or below its default position on the horizontal axis. At 100.0% the function is entirely above this axis; at 0.0% it's entirely below. The default is 50.0%.

 

 

 

 

Frequency

Compresses the function horizontally when the value is greater than the default of 1.0. Or stretches the function horizontally when the value is less than 1.0.

 

Phase Amount

Phase repositions the function along the horizontal axis. Phase Amount gives a percent value for the phase range set by Phase Min and Phase Max.

 

 

 

 

Phase Min

Sets one end of the phase range.

 

 

 

 

Phase Max

Sets the other end of the phase range.

 

Lower Clamp

Controls the minimum function value. The default is 0.0%.

 

Upper Clamp

Controls the maximum function value. The default is 100.0%.

 

 

 

 

Invert

When enabled, flips the function about the horizontal axis.

 

 

 

 

Reverse

When enabled, reverses the function. For symmetrical functions, you may not see the difference.

 

Input

Function re-mapping input. Link this to an linear time component to shift the function into the time domain.

Percent Component Parameters

 

 

 

 

Repeat Flag

When checked, the function will repeat.

 

 

 

 

Correction Factor

Controls the functions ramp up rate. A value of 1.0 makes the function linear. Lower values provide a fast ramp up while higher values provide a slow ramp up.

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