Setup of the experiment described by Koenderink developed in C# and Python, the program will save your results in a csv file.
List of commands:
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Left and right arrow key to adjust the hue
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Up and down arrow key to adjust saturation
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Spacebar to see again the image
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Return key to save and go to the next image
Paper: Koenderink J, van Doorn A, Witzel C, Gegenfurtner K. Hues of Color Afterimages. Iperception. 2020 Feb 18;11(1):2041669520903553. doi: 10.1177/2041669520903553. PMID: 32180934; PMCID: PMC7058369.