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Area Maximum Alpha
The Area Maximum Alpha node outputs a single-pixel image whose value is equal to the color which has the maximum value for its alpha channel in a given rectangular region.

Inputs and Outputs
Inputs:
Image (Image): The input image.Extent (Rectangle): The rectangular area to calculate the average color of the input image.
Outputs:
Output (Image): The output image.
Example
Here is a small example of this node in action:
