A program to produce an image of color illusion or to restore the original image from a color illusion image by converting (compressing or extending) the ranges of RGB-subpixel values
(RGB値のレンジを狭めたり広げたりすることで、色の錯視画像を作ったり、色の錯視画像の元の画像を復元したりするプログラム)
made by Akiyoshi Kitaoka, April 14, September 17, October 3, 13, November 12, 13, 26, 2022, June 11, 2023

Original image


eyedropper tool 色確認用

estimated modulation color (nonlinear)
estimated modulation color (linear)

Original R: -  G: -  B: -  (manual imput)

 Convert to R: -  G: -  B: -



倍率 x



CIE xy chromaticity diagram (CIE xy色度図)

  dot size

other chromaticity diagrams その他の色度図



Converted image



eyedropper tool 色確認用


倍率 x



CIE xy chromaticity diagram (CIE xy色度図)

  dot size

other chromaticity diagrams その他の色度図


Preset images プリセット画像

















(My list of Javascript programs)


Top page (English 英語) --- (日本語 Japanese)






Reference:

Shapiro, A., Hedjar, L., Dixon, E., & Kitaoka, A. (2018). Kitaoka's tomato: Two simple explanations based on information in the stimulus. i-Perception, 9(1), January-February, 1-9. PDF (open access)




Note: renamed from compress-extend-histogram01f.html (April 14, 2022)