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Using Merge Arithmetic to Correct Uneven Greenscreens v1.0
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Contributor: Stuart Robertson
Assuming that a greenscreen was unevenly lit – a fairly common problem - the basic concept of this approach is to determine the pixel-by-pixel difference between the greenscreen you have and the greenscreen you wish you had, and then to apply a pixel-by-pixel correction using Merge node arithmetic.
Requirements:
14.0, 13.2, 13.1, 13.0, 12.2, 12.1, 12.0, 11.3, 11 or later
14.0, 13.2, 13.1, 13.0, 12.2, 12.1, 12.0, 11.3, 11 or later
08 Mar 2025
1
USING MERGE ARITHMETIC TO CORRECT UNEVEN GREENSCREENS (OR BLUESCREENS, OR WHATEVER…) Assuming that a greenscreen was unevenly lit – a fairly common problem - the basic concept of this approach is to determine the pixel-by-pixel difference between the greenscreen you have and the greenscreen you wish you had, and then to apply a pixel-by-pixel correction using Merge node arithmetic.
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