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When applied to a grayscale mask built from a color image using the ToGrayscaleBitmap(ColorChannel, bool) method, modifies it so that the result can be used as a transparency mask to produce Glow or Soft Edges effect.
public void ApplyGlow(int infRadius = 4, int blurRadius = 6)
Public Sub ApplyGlow(Optional infRadius As Integer = 4, Optional blurRadius As Integer = 6)