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Ah, thank you! I didn't know about those divisions.

But I'm not sure how I'm supposed to do this:

The formula is to extract a transparent object that has been rendered on two different backgrounds.

Image intensity = (B₁*R₂ - B₂*R₁)/(B₁ - B₂)

Transparency = (B₁ - B₂ - R₁ + R₂)/(B₁ - B₂)

B₁ being background 1

R₁ being background 1 with image

B₂ being background 2

R₂ being background 2 with image

Can I simply use the multiply, divide, add and subtract blending modes for this?


What is our favorite program/app? (Hint - it begins and ends with the letter P)
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