OPTICAL ILLUSION

  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 5:13 AM GMT
    These two blocks are the same shade of gray.

    grayshade1.jpg


    Covering the middle with the same shade so you can see. COOL icon_wink.gif

    grayshade2.jpg
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 7:28 AM GMT
    Wow. Can't trust our eyes and brain. icon_confused.gif
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 7:37 AM GMT
    I love optical illusions and that's the best one I've seen.
    I'm still trying to figure it out.
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 8:45 AM GMT
    Here it is again.
    A is the same shade as B.
    I'm dumbfounded.
    http://en.m.wikipedia.org/wiki/Optical_illusion
    440px-Grey_square_optical_illusion.PNG
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 8:53 AM GMT
    Ever play find the head in the beans?
    optical-illusion-kid.jpg
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 2:01 PM GMT
    JohnSpotter saidEver play find the head in the beans?
    optical-illusion-kid.jpg


    Found it in about 7 sec. icon_wink.gif
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 2:12 PM GMT
    <5
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 2:30 PM GMT
    ART_DECO said<5

    I must be dull. I had to look forever! icon_rolleyes.gif
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 2:35 PM GMT
    Here's another good one although it's spinability changes with computer.
    optical-illusion-spinning-water-lilies-s
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 2:39 PM GMT
    The merry-go-round illusion is interesting.
    http://www.moillusions.com/merry-go-round-animated-illusion/
    cool_optical_illusion_02.gif
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 2:43 PM GMT
    For those who love optical illusions, I'll think I'll just post the whole link. icon_wink.gif
    Some great stuff here.
    http://www.gizmodo.com.au/2013/02/20-optical-illusions-that-might-break-your-mind/
    (Warning: the one with four circles gave me a big head-ache!)
  • Bunjamon

    Posts: 3161

    Dec 14, 2013 4:30 PM GMT
    And here's a fun video on the science of it all:

  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 5:37 PM GMT
    Crazy icon_eek.gif
    I love optical illusions too icon_razz.gif

    I still remember getting this 'Ripley's Belive It or Not' optical illusions book in 4th grade and being so mindblown. Now I'm still doing so just on the internet lol.

    Try this one, stare at the + sign and see what happens to the pink dots.

    tumblr_mpss361N0y1r7yav0o1_500.gif
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 5:39 PM GMT
    JohnSpotter saidEver play find the head in the beans?
    optical-illusion-kid.jpg


    That's creepy lol
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 8:56 PM GMT
    wrestlervic saidThese two blocks are the same shade of gray.

    grayshade1.jpg


    Covering the middle with the same shade so you can see. COOL icon_wink.gif

    grayshade2.jpg


    Yeah, but the highlights and shadows on both blocks are very different, so it's not all that surprising the eye is deceived by this.
  • Posted by a hidden member.
    Log in to view his profile

    Dec 14, 2013 11:28 PM GMT
    Ex_Mil8 said
    wrestlervic saidThese two blocks are the same shade of gray.

    grayshade1.jpg


    Covering the middle with the same shade so you can see. COOL icon_wink.gif

    grayshade2.jpg


    Yeah, but the highlights and shadows on both blocks are very different, so it's not all that surprising the eye is deceived by this.


    Sure, the design is purposely for that. But note that in spite of those highlights and shadows being very different, their differences "propagate" to the parts that are identical - and make them appear completely different.

    To block the "propagation", it is quite hard to do mentally (trying to ignore the highlights and shadows), rather one has to obstruct the regions.

  • Posted by a hidden member.
    Log in to view his profile

    Dec 15, 2013 12:31 AM GMT
    Curiocity saidCrazy icon_eek.gif
    I love optical illusions too icon_razz.gif

    I still remember getting this 'Ripley's Belive It or Not' optical illusions book in 4th grade and being so mindblown. Now I'm still doing so just on the internet lol.

    Try this one, stare at the + sign and see what happens to the pink dots.

    tumblr_mpss361N0y1r7yav0o1_500.gif


    This is simply phenomenal.
  • Posted by a hidden member.
    Log in to view his profile

    Dec 15, 2013 12:38 AM GMT
    Curiocity saidCrazy icon_eek.gif
    I love optical illusions too icon_razz.gif

    I still remember getting this 'Ripley's Belive It or Not' optical illusions book in 4th grade and being so mindblown. Now I'm still doing so just on the internet lol.

    Try this one, stare at the + sign and see what happens to the pink dots.

    tumblr_mpss361N0y1r7yav0o1_500.gif


    Wow it is amazing how the eyes relay visual input to the brain. I'd swear that this optical illusion would work because of how stereo vision merges images, but the peripheral of the pink dots still "spin" / "disappear" even with one eye closed! Interesting.

    No more though... headache coming in icon_smile.gif ORRR am I the only one experiencing that!? lol
  • HPgeek934

    Posts: 970

    Dec 15, 2013 12:39 AM GMT
    Curiocity said
    JohnSpotter saidEver play find the head in the beans?
    optical-illusion-kid.jpg


    That's creepy lol


    I can't find it icon_sad.gif
  • Posted by a hidden member.
    Log in to view his profile

    Dec 15, 2013 12:47 AM GMT
    HPgeek934 said
    Curiocity said
    JohnSpotter saidEver play find the head in the beans?
    optical-illusion-kid.jpg


    That's creepy lol


    I can't find it icon_sad.gif


    Really? Bottom row. Seventh 'bean' from the left.
  • Posted by a hidden member.
    Log in to view his profile

    Dec 15, 2013 3:18 AM GMT
    Curiocity saidTry this one, stare at the + sign and see what happens to the pink dots.tumblr_mpss361N0y1r7yav0o1_500.gif

    I don't know what you guys are seeing here. Can you tell me what's going on?
  • Posted by a hidden member.
    Log in to view his profile

    Dec 15, 2013 3:40 AM GMT
    wrestlervic saidThese two blocks are the same shade of gray.

    grayshade1.jpg


    Covering the middle with the same shade so you can see. COOL icon_wink.gif

    grayshade2.jpg


    I still didn't trust my eyes, so:

    210126e.jpg

    JohnSpotter saidHere it is again.
    A is the same shade as B.
    I'm dumbfounded.
    http://en.m.wikipedia.org/wiki/Optical_illusion
    440px-Grey_square_optical_illusion.PNG


    And again:

    1zzi4ba.jpg
  • Posted by a hidden member.
    Log in to view his profile

    Dec 15, 2013 6:54 AM GMT
    MarathonManiac said

    I don't know what you guys are seeing here. Can you tell me what's going on?


    The magenta dots will fade and blend into the gray background, and in their place, a single light green dot will appear to travel around the cross. This combines two distinct but related illusions. The true image has magenta dots in every frame of the animation, and the green dot is not actually present.

    This illusion is basically a "photoreceptor fatigue" type phenomenon, and as such, requires the eye(s) to be fixed on a single point (in this instance, the cross). See http://en.wikipedia.org/wiki/Afterimage for more details. But what makes this illusion interesting is the way in which animation is incorporated into the illusion, to make the effect repeating.

    For another dramatic example of this effect, check out this video (and no, it is not a prank or scare video):



    In this case, the illusion is that the afterimage appears in color, when in fact it is a grayscale image you are viewing after the burn-in period is over. This illusion is very easy to reproduce with any photograph if you are experienced with Photoshop, but this one is particularly effective because of the large areas of "familiar" color (green grass and blue sky).
  • Posted by a hidden member.
    Log in to view his profile

    Dec 15, 2013 7:47 AM GMT
    hebergeur d'image

    One of my first own architecture job ...
  • Posted by a hidden member.
    Log in to view his profile

    Dec 15, 2013 9:12 AM GMT
    heropup saidMarathonManiac said

    I don't know what you guys are seeing here. Can you tell me what's going on?


    The magenta dots will fade and blend into the gray background, and in their place, a single light green dot will appear to travel around the cross. This combines two distinct but related illusions. The true image has magenta dots in every frame of the animation, and the green dot is not actually present.

    This illusion is basically a "photoreceptor fatigue" type phenomenon, and as such, requires the eye(s) to be fixed on a single point (in this instance, the cross). See http://en.wikipedia.org/wiki/Afterimage for more details. But what makes this illusion interesting is the way in which animation is incorporated into the illusion, to make the effect repeating.

    For another dramatic example of this effect, check out this video (and no, it is not a prank or scare video):



    In this case, the illusion is that the afterimage appears in color, when in fact it is a grayscale image you are viewing after the burn-in period is over. This illusion is very easy to reproduce with any photograph if you are experienced with Photoshop, but this one is particularly effective because of the large areas of "familiar" color (green grass and blue sky).


    Thanks for explaining icon_smile.gif I've seen that vid and I did think it was gona have a scare prank at the end lol since I've been tricked into those so many times >.<

    Here's a similar illusion
    tumblr_lkl0nubaeS1qiuxzyo1_500.gif