Shake - Threshold

Threshold

Function

This function will cut off channels at a certain value, turning everything below that cutoff to zero. Each channel can have its own separate cutoff. By using the crush parameter, you can boost everything above that value 1.

Parameters	Type	Defaults	Function
red,green,blue,alpha	float	0	Anything below this value goes to black.
crush	int	0	If this is 1, everything above the cutoff values goes to 1.
softClip	float	0	Provides a rolloff value.

Synopsis

image Threshold( 
  image In,
  float red,
  float green,
  float blue,
  float alpha,
  int crush,
  float softClip

 );

Script

image = Threshold( 
  In,
  red,
  green,
  blue,
  alpha,
  crush,
  softClip
 );

Command Line

shake -threshold red green blue alpha crush softClip