Can You See the Truth in This Optical Illusion?

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SUMMARY

This discussion centers around the optical illusion involving two squares, A and B, which appear to be different colors but are actually the same shade. Participants share various methods to verify this, including using the eyedropper tool in image editing software and physically cutting and rearranging printed images. The conversation highlights the psychological effects of shadowing and color perception, emphasizing that visual interpretation can often be misleading despite objective evidence.

PREREQUISITES
  • Understanding of optical illusions and visual perception.
  • Familiarity with image editing tools, specifically the eyedropper tool.
  • Basic knowledge of color theory and RGB values.
  • Experience with printing and manipulating images for visual experiments.
NEXT STEPS
  • Explore advanced optical illusion techniques and their psychological implications.
  • Learn how to use Adobe Photoshop for color analysis and manipulation.
  • Research the science behind color perception and shadow effects in visual arts.
  • Investigate other famous optical illusions and their historical context.
USEFUL FOR

This discussion is beneficial for psychologists, artists, educators, and anyone interested in the intricacies of visual perception and optical illusions.

  • #31
LOL! Dave, you have funny looking square fingers. :smile:

Dex, it's the same optical illusion tricking you into seeing shades of gray in the overlaid box. Do it yourself (that's what I did). I just used the eyedropper tool to select the color in A, drew in a rectangle connecting the two squares, and filled it with the color in A. Lo and behold, it really is the same as the color in B, but even with the rectangle there, my eyes still wanted to interpret the squares as different colors because of the shadowing effect. Really nifty, huh?
 
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  • #32
Moonbear said:
LOL! Dave, you have funny looking square fingers. :smile:

Dex, it's the same optical illusion tricking you into seeing shades of gray in the overlaid box. Do it yourself (that's what I did). I just used the eyedropper tool to select the color in A, drew in a rectangle connecting the two squares, and filled it with the color in A. Lo and behold, it really is the same as the color in B, but even with the rectangle there, my eyes still wanted to interpret the squares as different colors because of the shadowing effect. Really nifty, huh?

Printing it off and physically cutting it and combinting the two squares is the best proof for me...

But while you're using the eyedropper, why don't you just look at the RGB value for square A and square B?
 
  • #33
check said:
Printing it off and physically cutting it and combinting the two squares is the best proof for me...

But while you're using the eyedropper, why don't you just look at the RGB value for square A and square B?


yes this was the more reasonable solution thought i guess many of you don't have photoshop lol. all that paper and ink wasted for nothing!
 
  • #34
  • #35
ooo, an old thread revived! :biggrin:
 
  • #36
http://www.optical-illusion.org/pictures/noktanokta.jpg

Whoa!
 
  • #37
and you've never seen that?
 
  • #38
Yep, I think that was the first time I ever saw it :smile:
 
  • #39
wow. that's one of the most popular illusions I've seen!
 

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