More illusion confusion

Circle Colour Illusion

Circle Colour Illusion designed by Akiyoshi Kitaoka. The image shows 12 sets of concentric circles. The 5 inner circles are all identically coloured, but it does not look like it. Read below to see how you can convince yourself. Click for a larger image.

After writing the article on colour illusions yesterday I was dissatisfied with the poor quality of the images in the Scientific American slideshow. Additionally, some of illusions were so amazing that they were hard to believe at all, and having poorly defined images just confused the issue. So I decided to make some of my own.

I used PowerPoint, which has the advantage that if you download the PowerPoint file you will be able to de-construct the images, and play around and convince yourself that your colour perception really is playing tricks with you! Enjoy 🙂

Blue Circle Illusion

Blue Circle Illusion. The grey circles in this image look 'pink-ish', but in fact they are just grey. Click for larger image.

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2 Responses to “More illusion confusion”

  1. Andrew Says:

    Oh wow! Thanks.
    I’m doing a talk next week called ‘confounding colorimetric curiousities’ and you’ve just made my last slide for me. Thanks!

  2. Andrew Says:

    Just lovely images. Thanks – I’m giving a talk called ‘Counfounding Colorimetric Curiosities’ next week and, with your permission, I now have a great high-impact final slide.

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