Hard Light Productions Forums

Off-Topic Discussion => General Discussion => Topic started by: jr2 on November 29, 2007, 03:47:03 am

Title: Optical Illusions
Post by: jr2 on November 29, 2007, 03:47:03 am
Are any of these new for you guys?  I've seen about half, I guess.  I like the wheels; it's cool, and I hadn't seen it before.

from http://www.boyslife.org/hobbies-projects/funstuff/1483/optical-illusions/

WHICH OBJECT IS TALLER?

(http://www.boyslife.org/wp-content/uploads/2007/06/taller.jpg)

WHICH LINE IS LONGER?

(http://www.boyslife.org/wp-content/uploads/2007/06/longerline.jpg)

IS THIS GRAY HAZE SHRINKING? (stare at the black dot)

(http://www.boyslife.org/wp-content/uploads/2007/06/gradient.jpg)

DO THESE COLORED LINES BEND?

(http://www.boyslife.org/wp-content/uploads/2007/06/coloredlines.jpg)

ARE THESE WHEELS SPINNING?  (Stare at the center. Now move your head back and forth toward and away from the screen.)

(http://www.boyslife.org/wp-content/uploads/2007/06/wheels.jpg)

HOW MANY BLACK DOTS CAN YOU COUNT? (Look closely and you will see them.)

(http://www.boyslife.org/wp-content/uploads/2007/06/blackdots.jpg)

DO YOU SEE TWO FACES OR A VASE?  (If you see one, close your eyes for a moment, then look for the other.)

(http://www.boyslife.org/wp-content/uploads/2007/06/faces.jpg)

ARE THESE LINES STRAIGHT OR CROOKED?

(http://www.boyslife.org/wp-content/uploads/2007/06/straightlines.jpg)

ARE YOU SEEING RED, WHITE & BLUE? (Stare at the center of this flag for one minute. Then look at an empty white sheet.)

(http://www.boyslife.org/wp-content/uploads/2007/06/flag.jpg)

Title: Re: Optical Illusions
Post by: Col. Fishguts on November 29, 2007, 07:16:58 am
Bah, static optical illusions are so yesterday. Bow before the might of the rotating snakes !

(http://www.ritsumei.ac.jp/~akitaoka/rotsnake.gif)

More here: http://www.ritsumei.ac.jp/~akitaoka/index-e.html
Title: Re: Optical Illusions
Post by: jr2 on November 29, 2007, 08:43:03 am
Awesome!!! :p  You didn't comment on my animated illusion!  :(
Title: Re: Optical Illusions
Post by: Nuke on November 29, 2007, 09:09:15 am
especially if you just smoked a bowl
Title: Re: Optical Illusions
Post by: CP5670 on November 29, 2007, 09:20:18 am
This is one of the best I've seen:

(http://www.unoriginal.co.uk/optical_illusions/2_9.jpg)

Are A and B the same color?
Title: Re: Optical Illusions
Post by: Flipside on November 29, 2007, 09:35:28 am
At a glance I'd say 'No', which probably means the correct answer is 'Yes'
Title: Re: Optical Illusions
Post by: TrashMan on November 29, 2007, 10:03:42 am
Ii makes no sense.. they are on a checkerboard patterns, logic dictates the lie on OPPOSING colors.
the shadow seems too weak to balance it out.
Title: Re: Optical Illusions
Post by: Flipside on November 29, 2007, 10:18:29 am
Checked it in Photoshop, they are the same colour....that's freaky.
Title: Re: Optical Illusions
Post by: achtung on November 29, 2007, 02:06:01 pm
A and B looked the same color to me at first glance =/.
Title: Re: Optical Illusions
Post by: castor on November 29, 2007, 03:57:47 pm
You mean the actual letters, right? :p
Title: Re: Optical Illusions
Post by: Black Wolf on November 29, 2007, 09:12:11 pm
You mean the actual letters, right? :p

No, the squares. They're both 120, 120, 120.
Title: Re: Optical Illusions
Post by: Scooby_Doo on November 29, 2007, 09:49:45 pm
Go into photoshop and delete everything but those two squares... they look the same then.
Title: Re: Optical Illusions
Post by: BloodEagle on November 29, 2007, 10:23:02 pm
Or you could just stare at 'B'.
Title: Re: Optical Illusions
Post by: achtung on November 29, 2007, 11:59:54 pm
Or you could just stare at 'B'.

Yeah, just focus on the letters instead of the blocks surrounding them.
Title: Re: Optical Illusions
Post by: Hellstryker on November 30, 2007, 12:59:59 am
Awesome, move your eyes while staring at the snakes. even the static ones seem to move
Title: Re: Optical Illusions
Post by: jr2 on November 30, 2007, 01:23:45 am
You mean the actual letters, right? :p

No, the squares. They're both 120, 120, 120.

:wtf:  Umm... no?
Title: Re: Optical Illusions
Post by: Scooby_Doo on November 30, 2007, 01:35:20 am
You mean the actual letters, right? :p

No, the squares. They're both 120, 120, 120.

:wtf:  Umm... no?

Their both very close to 120,120,120.
Do like i said above and the colors will appear correctly. 
BTW it appears they used two different light shadow renderings to make this image. 
Title: Re: Optical Illusions
Post by: jr2 on November 30, 2007, 01:42:37 am
:p  OK.  Umm, yes.  :nervous:
Title: Re: Optical Illusions
Post by: watsisname on November 30, 2007, 03:52:03 am
If you wear glasses, then look at this image while turning your head left and right.  You should see the tiles change color.  Kinda neat, mostly useless.  :p

(http://img523.imageshack.us/img523/249/goldbluetilesdi8.jpg)
Title: Re: Optical Illusions
Post by: redsniper on November 30, 2007, 10:47:52 am
Ooooh, chromatic aberration.
Title: Re: Optical Illusions
Post by: MP-Ryan on November 30, 2007, 11:05:18 am
If you wear glasses, then look at this image while turning your head left and right.  You should see the tiles change color.  Kinda neat, mostly useless.

Glasses aren't required; I have 20/20 vision and can still detect a colour shift.
Title: Re: Optical Illusions
Post by: CP5670 on November 30, 2007, 11:23:06 am
I get that effect on many normal objects in real life if I look out of the corner of my glasses. :p It's especially noticeable around high contrast boundaries, like a piece of paper on a dark table.
Title: Re: Optical Illusions
Post by: castor on November 30, 2007, 01:23:19 pm
You mean the actual letters, right? :p

No, the squares. They're both 120, 120, 120.
Sure. I thought Swantz meant the letters -- "A and B looked the same color to me at first glance". I guess he just got an extraordinary eyesight. ;)
Title: Re: Optical Illusions
Post by: watsisname on December 01, 2007, 02:03:53 am
If you wear glasses, then look at this image while turning your head left and right.  You should see the tiles change color.  Kinda neat, mostly useless.

Glasses aren't required; I have 20/20 vision and can still detect a colour shift.

Weird, if I try it without my glasses I detect little or no color shift at all.  Guess it goes to show everyone sees differently. :)
Title: Re: Optical Illusions
Post by: Dark RevenantX on December 01, 2007, 10:47:07 am
I can see the color shift without glasses...

Perhaps I need some?
Title: Re: Optical Illusions
Post by: CP5670 on December 01, 2007, 02:22:30 pm
I can't see it without my glasses, but that is only because everything becomes an unrecognizable blur. :p
Title: Re: Optical Illusions
Post by: jr2 on December 02, 2007, 07:02:42 am
I can't see it without my glasses, but that is only because everything becomes an unrecognizable blur. :p

Alright, let's see if this works, all people who use glasses, try this (http://krampf.com/experiments/Science_Experiment37.html).
Title: Re: Optical Illusions
Post by: castor on December 02, 2007, 09:05:05 am
Ahh yes, the pinhole glasses :D
(http://tbn0.google.com/images?q=tbn:KOufejC27ApqLM:http://www.beepworld.de/memberdateien/members28/ihre-gesundheit/27_1_b.jpeg)
They do work. Not very practical for common use though, due to the dark image and minimal field of vision.