Optical illusions confusing
Optical illusion - the impression of a visible object or phenomenon, not corresponding to reality, that is, optical illusion of sight. Some visual deceptions have long had a scientific explanation, others still remain a mystery.
We in the editorial office Shram.kiev.ua collected and tested the most steep optical illusions. Be careful: some of the illusions can cause tearing , nausea and disorientation in space .
See the three pretty girls?
Now turn the image ...
Our brain rarely encounters inverted images, so it can not notice distortions in them.
Illusion 13 people
Initially, we see 12 people here, but after the movement there is one more, the 13th.
Which way is the window open?
You can change the direction simply by thinking about it.
Distortion of perception of movement
These blocks do not move one behind another - their speed is the same.
Filling with color
Look at the black dot in the center. Keep looking at it when the picture changes. Have you seen a color photo? And now take your eyes from the point.
It seems that the squares on the left side are darker than the squares on the right. However, in fact they are the same color.
Dynamic gradient brightness
Slowly bring your eyes closer to the screen and the "light" in the middle will become brighter. Move back and it will become weak again.
Concentrate your eyes on the green dot in the middle. After a while, the yellow dots will disappear one after another. In fact, they remain in place, just static frames disappear from our consciousness, if they are surrounded by constantly changing images.
The Illusion of the Four Circles
In fact, none of them overlap.
Be careful! This optical illusion can cause a headache lasting up to two hours.
The Droste effect
The Droste effect is a looped recursive image.
The Illusion of Perception
The color of the strip in the center is actually uniform and the same along the entire length.
Roll the mouse wheel up and down and you will see how the poster "moves."
There are two photos here, and there is one difference between them. Try to find it, and once you notice the difference, you will not be able to see it.
If you cut a 5 to 5 chocolate bar and rearrange all the pieces in the order shown, then, from now on, an extra chocolate piece will appear.
Look at the cross in the middle
Peripheral vision turns beautiful faces into monsters.
Black and white or color
If you look closely at the point in the center of the black and white image for 15 seconds, the picture acquires a color.
Roger Shepard's drawing.
Which way does the wheel spin?
The Dragon of Gardner or the dragon of Jerry Andrus
The dragon of Gardner or the dragon of Jerry Andrus (by the name of the creator) as he does not always look at the observer.
Same or different?
How can two cigarettes be of different and equal size?
The Invisibility Chair
The optical effect, which creates a false impression of the location of the seat, is due to the original design of the chair, invented by the French studio Ibride.
Illusion of color
Do not look up at the cross and you will see how the purple spots become green. And then completely disappear.
Black and White Illusion
See thirty seconds for four points in the center of the picture, then move your eyes to the ceiling and blink. What did you see?
Illusion of the interior
At what point of the picture you would not have focused your eyes, the picture never stops moving for a second.
Are the colors of cells A and B different from the chessboard? The illusion of color perception, published by Edward H. Adelson, professor at the Massachusetts Institute of Technology in 1995.
It seems that the four white lines are moving chaotically. But it is necessary to impose images of squares on them, as everything becomes quite natural.
The birth of animation
An animation image was obtained by overlaying a black mesh on the drawing. Before our eyes, static objects begin to move.
Look, without blinking, in the middle of the image for 20 seconds, and then look at someone's face or just a wall.
The fact that the sailor looks so intently into the telescope is hidden under his nose. Well, or not quite under the nose In a word, try to find a girl in the picture.
The Hidden Dog
On this sign of the wedding salon the dog is hidden. Squint and take the man's hand at the dog's nose, try to see it.
Riddle for the quick-witted
The riddle for the quick-witted: where did the law of gravity go? Why is the water above, not below?
And what are your associations?
And what are your associations?
Well, how many heart shaped figures are there?
What did the fisherman catch? Or who?
Mountains and Highlanders
In the picture - not only the mountains, but, in fact, the mountaineers. The only question is, how many of them?
Who is there but the fox?
In addition to the fox, someone else is hiding here. Who, then?
How many frogs are there, surprising with the wonders of disguise?
What kind of people and animals are hiding in this mill?
We found 13 persons of people 1, 1 bear 1 axle 1 mezhdu 1 horse 1 cow, 1 Zhenshinu!
While the girls are dancing, the guys are peeking
While the girls are dancing, the guys are peeking Can not you see three guys here? Take a closer look!
The Ames room is an irregularly shaped room used to create a three-dimensional optical illusion. It was designed by American ophthalmologist Albert Ames in 1934 and was built in 1935.
The scheme of the true and apparent
position of the person in the room
with Ames, and the shape of this room
The Ames room is constructed so that from the front it looks like an ordinary cubic-shaped room with a back wall and two side walls parallel to each other and perpendicular to the horizontal planes of the floor and ceiling. However, the true shape of the room is trapezoidal: the walls are inclined, the ceiling and the floor are also inclined, and the right corner is much closer to the observer who enters the room than the left one, or vice versa.
As a result of optical illusion, a person standing in one corner seems to be an observer giant, while a person standing in another corner seems to be a dwarf. Illusion is so convincing that a person going forward and back from the left corner to the right corner "grows" or "decreases" in the eyes.
Studies have shown that an illusion can be created without the use of walls and ceilings - to create a visible horizon (which is not really horizontal) enough to create a corresponding horizon, and that the observer's eye fall on an object whose height exceeds the height of this horizon.
The principle of the Ames room is widely used in movies and on television to create special effects, when a person in fact normal growth needs to be shown as a giant or dwarf compared to others.
Red on white seems lighter,
on black, it's darker.
Closer to the left
White stripes appear redder,
while the red ones on black
to the right, whiter.
When you look at
the middle of the drawing from the bands of black to white,
the latter "move" upwards
Illusion of the perception of Adelson's color.
seems darker than the labeled bottom;
mark on a "light" parallelogram
seems brighter and lighter than on the "dark"
The illusion of movement:
if you do not focus your eyes
in the figure it will seem,
that the spiral is spinning
The illusion of movement
(you should look at the black point
In the center and move the head forward-backward;
circles around the point will start moving)
With prolonged peering
in the "darkness of the pipe" strip
begin to "move."
When looking at
F the negative is visible
architecture creates the illusion
(convex) (the "pyramid"),
then a (concave) square well
Left or right,
clockwise or counterclockwise
will rotate the silhouette depends
from the preference of a person.
The illusion of "Circle or spiral?"
In fact, the centers are identical
The central band of one brightness
Small squares of one brightness
Circles "bend" the sides of a square
Illusion of the lattice. When you move the view over the image, the white dots "turn" into black dots
The hexagonal grid creates the effect of the appearance of triangles of different sizes in different places
With prolonged peering into the "darkness of the pipe," the bands begin to "move." When you look at F, you see a negative
The directions of the hinge bend seem mutually perpendicular (forward-backward or left-right)
And finally to you all, a gift - A blooming flower !!!
Or is it not worth it? ...
The red lines are parallel to each other! Or not?
What do you see - a spiral or just circles?
Look only at the point. At the same time move your head forward and back ...
Look at the center. At the same time move your head forward and back ...
Spirals or circles?
Probably everything is moving with you ?
How many wolves are there? Must be five. Can you guess?
There are 10 eagles in the picture. If six can be seen at once, then it's not possible to find four more!
We count the jaguars. Must be at least 10
One, the biggest deer, we see right away. But in the picture there are a few more classified. Your task is to find them.
How many horseheads are there?
What animals are hidden in the picture? Wolves - do not count!
We consider pandas. Should be 10.
Somewhere around here, among the flowers, there were as many as 15 birds. Could anyone find them all?
The artist made several mistakes in this picture. Which ones?
Optical illusion (visual illusion) is a mistake in visual perception caused by inaccuracy or inadequacy of the processes of the unconscious correction of the visual image (lunar illusion, incorrect estimation of the length of segments, the angles or color of the depicted object, the illusion of movement, the illusion of the absence of the object - banner blindness, etc. .), as well as physical causes ("flattened moon", "broken spoon" in a glass of water). The causes of optical illusions are investigated both in the analysis of the physiology of vision and in the study of the psychology of visual perception.
In artistic images, the intentional distortion of perspective causes special effects, best known from the works of Maurice Escher ( see, for example, his lithographs: "Up and Down" (1947), "Convex and Concave" (1955), "Belvedere" (1958) and so on )
The creation of optical illusions was often the theme of Salvador Dali's works ( see, for example, his paintings "The Slave Market with the Appearance of the Invisible Bust of Voltaire" (1938), "Swans that Reflect in Elephants" (1937), etc. ).
Some optical illusions were studied within the framework of Gestalt psychology ( eg . Akiyoshi Kitaoka ).
Illusions of the visual system
There is an effect of visual perception, when the observer consciously or involuntarily gives an untrue explanation of the picture he observes. It is well known to everyone who has observed clouds running in the sky, sometimes taking the form of certain visual objects. The same effect can occur when observing the pattern of shadows distribution of three-dimensional objects at some of their angles with respect to light sources.
This is what explains the sensations in the mass media about the observation of the human head on Mars, and so on.
At the same time, the explanation of a randomly created spot is sometimes used by psychologists to find out the properties of the subject's intelligence, in which the deception is caused intentionally. (Rorschach spot test)
Illusions of color perception
Already for about a hundred years it is known that when an image appears on the retina of the eye, consisting of light and dark areas, the light from brightly lit areas flows into dark areas. This phenomenon is called optical irradiation.
One such illusion was described in 1995 by Edward Adelson, a professor at the Massachusetts Institute of Technology ( "Adelson's shadow of illusion" ). He drew attention to the fact that the perception of color essentially depends on the background and the same colors on different backgrounds are perceived by us as different, even if they are close and visible to us simultaneously.
Perception of depth
Illusions of perception of depth - inadequate reflection of the perceived object and its properties. At present, the most studied are the illusory effects observed in the visual perception of two-dimensional contour images. The brain unconsciously sees drawings only one-concave (single-concave). Perception depends on the direction of the external (real or implied) lighting. 3D effect (2D images seem to be voluminous).
Negative Disparity creates conditions for a person to perceive illusions of the reverse perspective. That is, if a person looks at a concave or convex object, for example, through a Pseudoscope, then in his field of vision the object will look convex or concave, respectively. This illusion is best observed when considering simple symmetrical objects.
Perception of size
Illusions often lead to completely incorrect quantitative estimates of real geometric quantities. It turns out that you can make a mistake of 25% or more if the eye measurements are not checked by a ruler.
Eye measurements of geometric real quantities depend very much on the background image. This refers to the lengths (Ponzo's illusion), areas, radii of curvature. It can also be shown that what has been said is also true with respect to angles, shapes, and so on.
Turning - a kind of optical illusion, in which the direction of view depends on the nature of the perceived object. One of these illusions is the "utkozayats": the image can be treated both as an image of a duck, and as an image of a hare.
Stereopairs superimposed on a periodic structure (Bela Yulesh, Hungary) allow us to observe the stereo image in the same way as a conventional stereopair. The periodic image makes it easier to "dilute" the eyes (usually to infinity), which, after focusing the eyes at a distance of several tens of centimeters, allows you to see the stereo image.
The method allows you to partially combine stereopair images, removing restrictions on their size, but imposes some restrictions on the content of drawings and is almost calculated using computers.
Room, invented by Adelbert Ames-Jr . in 1946, is an example of a three-dimensional optical illusion. The room is designed in such a way that when viewed from the front it seems normal, with perpendicular walls and ceiling. In fact, the shape of the room is a trapezoid where the far wall is located at a very sharp angle to one wall and, accordingly, at an obtuse angle to the other. The right angle, therefore, is much closer to the observer than the left one.
Due to the illusion, reinforced by the distorted chess cells on the floor and walls, the person standing in the near corner looks like a giant compared to standing in the far corner. When a person goes from corner to corner, the observer seems to grow up or, conversely, decrease.
The effect is enhanced by tilting, rotating, approaching / removing the head:
- The still image seems to be moving.
- When considering identical moving balls, you can see that they are of different sizes.
- The same animated image can represent a rotating object clockwise, counter-clockwise or alternately (perform oscillatory movements).