MinMax Node

The MinMax node combines two inputs by comparing each channel on a pixel-by-pixel basis and selecting either the lower (MINimum) or higher (MAXimum) value for the output, as you specify in the MinMax node panel. The most common use for the MinMax node is to combine two mattes by selecting the maximum alpha channel values of the two inputs.

The MinMax node enables you to specify the output value for each channel individually. You can specify that Chalice use

  • the minimum value as the output for any channel
  • the maximum value as the output for any channel
  • the A or B input value as the output for any channel

MinMax Parameter Tab

The MinMax tab creates an entry for every channel in the inputs. Each entry consists of a row of buttons labeled Input A, Input B, Minimum, and Maximum.

Input A

Depress the Input A button to use the channel data of the top input image as the output value for the referenced channel.

Input B

Depress the Input B button to use the channel data of the bottom input image as the output value for the referenced channel.

Minimum

Depress the Minimum button to use the minimum value of the two inputs as the output value for the referenced channel.

Maximum

Depress the Maximum button to use the maximum value of the two inputs as the output value for the referenced channel.




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