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How many circles do you find in this picture?

Chen Lin on 7 Feb 2024
Latest activity Reply by Hans Scharler on 15 Feb 2024

Can you see them?

9 Comments

Image Analyst
Image Analyst on 8 Feb 2024
I see 16 with the regular flat image. If I use parallel vision ala magic eye, I see 20. Could probably detect them in MATLAB using a Roberts edge filter and a morphological closing.
Adam Danz
Adam Danz on 8 Feb 2024
No way there's more than 16!
All vertical lines are within a circle. All horizontal lines are outside of all circles. There are 16 sections of vertical lines. I'm dying to know where the other 4 come from! 🙃
Image Analyst
Image Analyst on 13 Feb 2024
I see 16 with the regular flat image. If I use parallel vision ala magic eye, I see 20. Could probably detect them in MATLAB using a Roberts edge filter and a morphological closing.
Image Analyst
Image Analyst on 13 Feb 2024
I see 16 with the regular flat image. If I use parallel vision ala magic eye, I see 20. Could probably detect them in MATLAB using a Roberts edge filter and a morphological closing.
Hans Scharler
Hans Scharler on 15 Feb 2024
Have you written MATLAB code for this yet?
Hannah
Hannah on 8 Feb 2024
16!
Walter Roberson
Walter Roberson on 8 Feb 2024
3 full circles. They are difficult to see unless I defocus my eyes.
goc3
goc3 on 7 Feb 2024
Just like Magic Eye books!
Chen Lin
Chen Lin on 7 Feb 2024
When I was a kid, no matter how hard I tried, I was not able to see the hidden 3D image. 20+ years later, when I saw them again, I decided to give it another try and I saw it! This is like a whole new world. I had my magic eye!

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