Posted on March 1, 2011 by Puzzles
Maybe you know that faces are more difficult to recognize when they’re upside-down and that sometimes we misperceived the facial expressions of upside-down faces .
But Peter Thompson , from the University of York (UK) discovered an amazing optical illusion !
We can name it The Fat Face Thin illusion. Your assignment is to compare the upside-down face on the left of the lower figure with the upright face on the right. Have you noticed how the upside-down version looks much thinner?! Moreover it appears longer shaped than the upright version. Of course, there is no need to mention how both pictures are identical. This illusion illustrates the internal features of the face (eyes, nose, mouth) can distort our perception of face shape.
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Posted on November 10, 2010 by Puzzles
This is a rare and curious image…..
Can you tell what it is?
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Posted on October 25, 2010 by Puzzles
A Geometric Paradox or an optical illusion?
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Posted on November 20, 2009 by Puzzles
Emergence of images refers to the unique human ability to aggregate information from seemingly meaningless pieces, and to perceive a whole that is meaningful. This special skill of humans can constitute an effective scheme to tell humans and machines apart. This paper presents a synthesis technique to generate images of 3D objects that are detectable by humans, but difficult for an automatic algorithm to recognize. The technique allows generating an infinite number of images with emerging figures. Our algorithm is designed so that locally the synthesized images divulge little useful information or cues to assist any segmentation or recognition procedure. Therefore, as we demonstrate, computer vision algorithms are incapable of effectively processing such images. However, when a human observer is presented with an emergence image, synthesized using an object she is familiar with, the figure emerges when observed as a whole. We can control the difficulty level of perceiving the emergence effect through a limited set of parameters. A procedure that synthesizes emergence images can be an effective tool for exploring and understanding the factors affecting computer vision techniques.
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Posted on July 5, 2009 by Puzzles
A friend sent me our newest exhibit. We had some egg illusions in the past, but have to admit this is different. In its core, this optical illusion is very similar to the famous Missing Part test. Additionally, it may remind you of those missing China men, extra Leprechauns, Mad Scientist soccer team… you know what I mean. To make you understand what is going on around here, let me explain first. In the first card (A) we have one chicken and 8 eggs. Cut this card in 4 pieces (like outlined below), and then again assemble it in a different matter (card B), resulting with proper rectangular image. You will get our original chicken, but the number of eggs this time is different. Additionally, there is a missing piece in this newly assembled card. Why is that? If the surface of both puzzle cards is equal, how can one be missing a piece? Hint: are the surfaces really equal? You tell me! Remember, there is more than one optical illusion present here.
From Archimedes Lab.
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Posted on February 11, 2009 by Puzzles
These animals, created using the tube lines map, stations and junctions of the London Underground were first spotted by Paul Middlewick in 1988.
The original animal, the elephant was discovered while Paul was staring at the tube map during his daily journey home from work.
Since then, the elephant has been joined by many others from bats to bottlenose whales .To see more go on the link given in the end of post.
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Posted on December 31, 2008 by Puzzles
Look at this blurry image below. Can you tell in which direction the female is looking at?
Most of you would normally believe that the girl’s eyes are directed towards the right. But you have benefit of knowing that if this photo is presented here, it must have something to do with optical illusions, so probably you will opt in for the opposite direction. If we defocus the picture, as a result we get a nice n’ sharp image of a young normal person – with eyes directed towards left.
Another illusion explained!
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Posted on November 19, 2008 by Puzzles
On the image above we see artwork “
The Great Wave off Kanagawa” by Japanese artist Hokusai
, which was published in 1832 as the first in Hokusai’s series 36 Views of Mount Fuji.
It depicts an enormous wave threatening boats near the Japanese prefecture of Kanagawa; Mount Fuji can be seen in the background. The main reason of publishing this artwork here is highly detailed painted wave. As we know, some artworks, which are close to fractal images by detailed elaboration, were created long before the inventing fractals by Benoît Mandelbrot
. Sea waves can be represented by many types of fractals, as you can see below.
Fractal artworks with waves are created by modern artists too. For example, Robert Fathauer depicted a wave fractal with Escher-like fish tiling in his artwork “Fractal Fish – Grouped Groupers” (2001).
Also, a wave with horses figures are depicted on the cover of English rock group Keane “Under The Iron Sea” (2006).
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Posted on September 26, 2008 by Puzzles
An installation of an upside down house in Trassenheide Germany was opened to the public two weeks ago and was designed by Polish partners Klaudiusz Golos and Sebastion Mikuciuk for the Edutainment exhibition company.
People who have visited the house reported feeling dizzy and disorientated. An interesting alternative view of every day items and the designers did a great job with the interior. Similar buildings have been designed upside down before but only from the exterior.
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Posted on July 21, 2008 by Puzzles
Here is a tip to make your own Rainbow.
Fill a glass of water (almost to the top) and place it at the very edge of the counter in a dark kitchen. Place a sheet of plain white paper on the floor a few inches away from the counter. Put two pieces of masking tape over the front of a flashlight so that the light comes out of a slit about 1/8 inch (0.3 cm) wide. Shine this light across and down into the water as shown in the figure. When a narrow beam of light is passed through a glass of water, a spectrum can be seen on a white sheet of paper.
Can you see a small rainbow on the white paper? If not, move the flashlight around a little until you achieve the best results.
Now that you know what to look for, you will begin to notice small rainbows wherever sunlight falls on water, glass, or plastic that has a tapered shape. Look for rainbows produced by the beveled edge of a mirror or a chandelier.
Filed under: curious, effects, nature | Tagged: home, optical illusion, rainbow | 46 Comments »