Can You See the Truth in This Optical Illusion?

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Discussion Overview

The discussion revolves around the perception of optical illusions, specifically focusing on the color of squares in various images. Participants share their experiences, challenges in perception, and different methods to demonstrate or prove the color similarities or differences in the illusions presented. The scope includes exploratory reasoning and technical explanations related to visual perception.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants assert that two squares in an optical illusion are the same color, despite their perception suggesting otherwise.
  • Others express disbelief in the claim that the squares are the same color, stating it is impossible based on their visual experience.
  • A few participants propose practical methods, such as printing the image and physically manipulating the squares, to demonstrate their color equivalence.
  • Some participants discuss the effects of shadowing and JPEG compression on color perception in the images.
  • There are mentions of using tools like the eyedropper in image editing software to analyze color values, which some believe could provide clarity on the color similarities.
  • Several participants share additional optical illusions and challenge each other's interpretations of those images.

Areas of Agreement / Disagreement

Participants generally do not agree on the color perception of the squares, with multiple competing views remaining on whether they are the same color or not. The discussion reflects a mix of belief and skepticism regarding the optical illusions presented.

Contextual Notes

Some participants note that the perception of color may be influenced by factors such as shadowing effects and image quality, which could complicate the interpretation of the 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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