Intersecting masks

DxO PhotoLab
12

I have discovered an alternative way to generate intersecting masks that eliminates the “Invert Shape” step. If you are familiar with Venn logic diagrams and the associated logic, then

a AND b = NOT((NOT a) OR (NOT b))

is equivalent to a mask intersection. To execute this in PhotoLab 9:

  1. Create your masks as submasks, as shown in the normal method.
  2. Invert every mask.
  3. Invert the “parent” mask.

Done!

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