Problem 58424. ICFP 2022 - RoboPaint Image Scoring

The ICFP2023 Challenge is Jul 7-10, registraion opens late June. Updates at TwitICFP2023. These contests are insanely complicated and competitive. The challenge evolves every 12 hours with new files and rule updates.
The ICFP2022 HomePage has details of the RoboPaint contest. Twit2022, WriteUps, PriorEvents, Spec, ImageSubmissions, Puzzles, SawickiSolutions are useful links. Posted 6/17/23.
This challenge is to score the image Similarity given the Goal.png as an [m,n,3] matrix,G, and a Submit.png matrix,S.
A video of FrictionlessBananasSawicki paint steps, [2FBS.mp4.avi] shows the processing method to create Submit.png.
ImgScore = round(alpha * sum(pixel_distances)) with alpha=0.005 where pixel_distance = (rdist+gdist+bdist)^0.5
where rdist=(G(X,Y,1)-S(X,Y,1))^2, gdist=(G(X,Y,2)-S(X,Y,2))^2, bdist=(G(X,Y,3)-S(X,Y,3))^2
Solve

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66.67% Correct | 33.33% Incorrect
Last Solution submitted on Nov 29, 2023

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