Optical Illusions

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Posted by BigV
1/02/2021 11:00 pm
#1

Here's a really, really good one.

The Ames Window.



 


Be Just And Fear Not
 
Posted by xoxoxoBruce
1/03/2021 12:10 am
#2

I saw that, I could handle the tapered cut piece oscillating, it was playing with my senses but I could rationalize what was happening.
But when they started sticking things through well it was too much to understand.

Last edited by xoxoxoBruce (1/03/2021 12:11 am)


 Freedom is just another word for nothin' left to lose.
 
 
Posted by BigV
1/03/2021 12:35 am
#3

Right!

But, it was *not* oscillating, that was mah brane oscillating.  Even seeing it with the tiny Rubik's Cube I was still fooled.  I just could not see it rotating when viewed from the "privileged perspective".  Impossible.


Be Just And Fear Not
 
Posted by Happy Monkey
1/03/2021 3:13 pm
#4

For the big one on the porch at about 12:00, I was able to perceive the short end passing in front for a second, but lost it as soon as it went behind the bar.


 _______________
|_______________| We live in the nick of times.
|  Len 17, Wid 3      |
|_______________|[pics]
 
Posted by footfootfoot
1/04/2021 3:59 pm
#5

Very cool. It's like that little dragon illusion but not a dragon and not little. Otherwise, it's very similar.


Hey! That's me up there!
 
Posted by Flint
5/24/2021 1:49 pm
#6

Artificial intelligence tricked by optical illusion, just like humans



In this research, the DNNs were trained with natural-scene videos of motion from the point of view of the viewer. The motion prediction ability of the obtained computer model was then verified using a rotating propeller in unlearned videos and the “Rotating Snake Illusion” (image above).

The computer model accurately predicted the magnitude and direction of motion of the rotating propeller in the unlearned videos. Surprisingly, it also represented the rotational motion for the illusion images that were not physically moving — much like human visual perception. While the trained network accurately reproduced the direction of illusory rotation, it did not detect motion components in negative control pictures wherein people do not perceive illusory motion.

Last edited by Flint (5/24/2021 1:50 pm)


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Posted by BigV
11/10/2021 8:22 pm
#7

Undertoad wrote:

holy fucking shit

if you are short on time you may start at about 50 seconds in


that's pretty cool!

...

It seems...familiar, somehow.


Be Just And Fear Not
 
Posted by xoxoxoBruce
11/13/2021 8:33 pm
#8

Yeah that gets me no how many times I see it and hear it explained.


 Freedom is just another word for nothin' left to lose.
 
 
Posted by xoxoxoBruce
12/16/2021 12:27 am
#9

Just stay on the straight streets...


 Freedom is just another word for nothin' left to lose.
 
 
Posted by glatt
12/16/2021 12:07 pm
#10

very cool

 
Posted by Flint
12/16/2021 2:53 pm
#11

intense visual effect, I'm running this through some filters and it's interesting what pops out of that pattern


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Posted by BigV
12/16/2021 7:53 pm
#12

This is an interesting illusion.  At first I thought it was just an advertisement for teh Google.  But that was just the distortion of my tears obscuring my view of my brothers and sisters.

Can you see the difference?


 


Be Just And Fear Not
 
Posted by Diaphone Jim
12/17/2021 12:21 pm
#13

The Google piece is an easy two minutes.
There are many more on line.

https://www.youtube.com/watch?v=JyJOZduLZdo

 
Posted by Flint
12/17/2021 7:16 pm
#14

Flint wrote:

intense visual effect, I'm running this through some filters and it's interesting what pops out of that pattern

here I just applied a slight gaussian blur, median filter, and gamma adjustment


I think it's intersting when basic filter algorithms can "see" the optical illusion
 

Last edited by Flint (12/17/2021 7:19 pm)


signature s c h m i g n a t u r e
 
Posted by Happy Monkey
1/02/2022 1:41 pm
#15

 _______________
|_______________| We live in the nick of times.
|  Len 17, Wid 3      |
|_______________|[pics]
 
Posted by BigV
1/02/2022 8:26 pm
#16

Those were great!

My favorite was the Slime Hand.

eeeeewwwwwwww!!!

Thanks HM!
 


Be Just And Fear Not
 
Posted by Diaphone Jim
1/03/2022 7:12 pm
#17

I think I need about three kinds of therapy.  I'll send you the bill. 

 
Posted by Diaphone Jim
1/05/2022 12:54 pm
#18

The more I think about those ten award winners the more I realize that they are different from traditional optical illusions, which rely on the wiring of the eye and brain. 
These are more in the realm of video trickery, which is OK but is more invented than discovered.
There are other versions of the hand manipulation in the mirror that really make one think about perception;  I'll try to find some and post.
 

 
Posted by Happy Monkey
1/05/2022 3:51 pm
#19

Only 4 of them rely on the fixed-single-camera position.  The other 6 all are brain wiring.  4 is still a bit high,but it's not even a majority.


 _______________
|_______________| We live in the nick of times.
|  Len 17, Wid 3      |
|_______________|[pics]
 
Posted by BigV
2/06/2022 11:03 pm
#20


ready, go!
you post your thoughts/or just keep'em in your head.  I'll post the next screenshot.


Be Just And Fear Not
 
Posted by Diaphone Jim
2/08/2022 12:38 pm
#21

Post it

 
Posted by glatt
2/08/2022 6:34 pm
#22

There are 4 of them huh?  They have those sharp beaks and attack him taking chunks out of him and his blood fills the water in a big pink cloud.

 
Posted by xoxoxoBruce
2/08/2022 11:01 pm
#23

What the fuck? Why don't you post the fucking video?
 


 Freedom is just another word for nothin' left to lose.
 
 
Posted by BigV
2/09/2022 12:51 am
#24

Diaphone Jim wrote:

Post it

ok


Be Just And Fear Not
 
Posted by BigV
2/09/2022 12:52 am
#25

xoxoxoBruce wrote:

What the fuck? Why don't you post the fucking video?
 

ok



 


Be Just And Fear Not
 


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