Showing posts with label optic. Show all posts
Showing posts with label optic. Show all posts

Tuesday, March 8, 2011

Positive Spying

As said in the CBS News video, the difference between children's toys and adults' is the price. The team is not only doing an amazing, never seen before job, but they are actually having fun, marvelling at what they observe and record, just as we do.
When will all humans cherish, protect, respect, all animals all over the planet?

And for those who prefer fiction (especially in tricky 3D) here is the scenario: With far more sophisticated equipments, aliens have stuffed our planet, having fun watching us each saturday night (if they have a saturday, that is).


Super Spy Cams Film Cute Baby Polar Bear - Polar Bear: Spy on the ice.

Incredible rare footage of a baby polar bear in the wild, filmed using specialist spy cameras. Narrated by David Tennant.



Clever Polar Bear Stalks Seal - Polar Bear: Spy On The Ice.





A rare view of polar bears

CBS News




John Downer Productions Ltd.
A rare view of polar bears
Spy cams and the secret world of polar bears

Monday, March 7, 2011

Looking at the Invisible

Can you hear the unhearable? Can you see the unseeable? 
Common sens says no, adding "of course not".
Well check this out as it might give you access to what you thought impossible, therefore enrich your cerebral connections, and perhaps widen your fields of perception.


 New camera makes seeing the "invisible" possible 



"A group of researchers at Missouri University of Science and Technology in Rolla has developed a handheld camera that uses microwave signals to non-destructively peek inside materials and structures in real time." MissouriSandT 



Impossible colors
"Impossible colors are hues that can only be perceived under specific conditions. 
Examples of impossible colors are bluish-yellow and reddish-green.
This does not mean the muddy brown color created when mixing red and green paints, or the green color from yellow and blue, but completely unique "new" colors."  wikipedia.org


Have you ever seen the color bluish yellow?

Some people may be able to see the color "yellow-blue" in this image. Allow your eyes to cross until both + symbols are on top of each other.


 A graph or how the brain interprets color.





Hue scale 0—360°


Scientific America
"Impossible" Colors: See Hues That Can't Exist

"Red and green are called opponent colors because people normally cannot see redness and greenness simultaneously in a single color. The same is true for yellow and blue.
Researchers have long regarded color opponency to be hardwired in the brain, completely forbidding perception of reddish green or yellowish blue.
Under special circumstances, though, people can see the “forbidden” colors, suggesting that color opponency in the brain has a softwired stage that can be disabled.
In flickering light, people see a variety of geometric hallucinations with properties suggestive of a geometric opponency that pits concentric circles in opposition to fan shapes."





3d-today.org/search/label/optic

Monday, December 27, 2010

Tricky Cromagnon

Bison-mammoths

  1. Early cave art researcher Henri Breuil copied this image of overlapping bison and mammoth from the walls of Font-de-Gaume in France.
  2.  Unlike other bison-mammoths that depict two distinct but overlapping images, this carving from a spear-thrower features one image that can be seen two different ways. Above, the artifact in its natural state. Below, red ovals highlight the position of the two eyes. 
  3. The two sides of a figurine from a site near Cambrai show very different details. On one side (left), the high back leg and short front leg are characteristic of depictions of bison. On the other, the tall straight front leg and grooves depicting long hair in the midriff are typical of mammoths. (Image courtesy of Duncan Caldwell)

World's Oldest Optical Illusion Found? >>   blogs.nationalgeographic.com

3D TODAY: Tricky Cromagon http://bit.ly/gPgjGQ

Tuesday, December 7, 2010

Optical Camouflage puts Kinect into stealth mode


Optical Camouflage built with Kinect and Openframeworks
"..Takayuki Fukatsu, a Japanese coder who works under the name Art & Mobile, has done a bit of trickery with Kinect and openFrameworks. The peripheral will still track your movement and position, but turns your image nearly transparent..."




Monday, October 25, 2010

Saturday, October 9, 2010

Dramatically different percepts between foveal and peripheral vision


shapirolab.net


When viewed foveally, the fields surrounded by black and the fields surrounded by white appear to modulate out of phase with each other.
When viewed in the periphery, the fields modulate in phase with each other.


PDF Description:shapirolab.net

Tuesday, August 24, 2010

Pixels Camouflage



Image Hosted by ImageShack.us

"The days of disguising things from the human eye are gone. Now, camouflage is designed to hide objects from digital satellites."  thebrigade.com





Optic art as a way to survive  3d-today.org

Tuesday, May 18, 2010

Impossible motion: magnet-like slopes

Impossible motion: magnet-like slopes

Winner of the Best Visual Illusion of the Year Contest 2010. Koukichi Sugihara Meiji Institute for Advanced Study of Mathematical Sciences, Japan



Best Illusion of the Year Contest

'Impossible motion' trick wins Illusion Contest
article by James Urquhart.

Monday, May 10, 2010

Ponzon Illusion


"The Ponzo illusion is an optical illusion that was first demonstrated by the Italian psychologist Mario Ponzo (1882-1960) in 1913.
He suggested that the human mind judges an object's size based on its background.
He showed this by drawing two identical lines across a pair of converging lines, similar to railway tracks.
The upper line looks longer because we interpret the converging sides according to linear perspective as parallel lines receding into the distance.
In this context, we interpret the upper line as though it were farther away, so we see it as longer – a farther object would have to be longer than a nearer one for both to produce retinal images of the same size."


Friday, February 12, 2010

Optic art as a way to survive

Optic art as a way to survive
Why are Zebras striped?
Camouflage is a well known, well understood way of protecting yourself, blending with the environment and remaining static. 
But nature has invented another opposite solution: if you can't hide, show yourself...too much and move fast.
Optic art as a way to survive!

You are the Fleet Admiral of the Navy in WWI what do you do?



RISD/ Special Collections
Dazzle Camouflage


Gif Optic




Fashion helps escaping from predators
Thanks Black and WTF

Can you see me?
Thanks Blog Coyotepact


The Invisible Shoe

The Invisible Shoe is one of the 5 different shoe concepts by the Brazilian footwear designer Andreia Chaves.
http://www.todayandtomorrow.net/2009/12/09/the-invisible-shoe/


Pixels Camouflage: 3d-today.org 

Friday, June 5, 2009

The Contrast Asynchrony /Arthur Shapiro

Arthur Shapiro's Illusions and Demonstrations for Vision Research



Just read the description carefully, or you won’t understand.
Look at the flashing small circles in the center of the larger ones.
They flash differently, don’t they? When one is white, the other is black. Right?

Well, no. Click on "Add/remove surrounds” and watch how they actually flash.
I didn’t believe it at first. I even took a screenshot ...
Anyway, they flash at the same time and have the same color when flashing.

shapirolab.net

Wednesday, June 3, 2009

Akiyoshi's illusion pages

"Rotating snakes" Circular snakes appear to rotate 'spontaneously'





More and more illusions by Akiyoshi Kitaoka
about Akiyoshi Kitaoka

Arthur Shapiro

Arthur Shapiro's Illusions and Demonstrations for Vision Research

Posted via email from xea's posterous

Now you see it: Best visual illusions of 2009 - New Scientist

Interactive Movie - COLOUR DOVE
"If you stare for a long time at a large coloured image and then glance at a white background, you'll see the same image appear, but in its complementary colours. That's because the receptors in the eye that pick up the image's colour have become tired and surrounding receptors that haven't been used take over. While this effect is well-known, Yuval Barkan and Hedva Spitzer from Tel-Aviv University recently demonstrated the first example of a related illusion that causes the background colour to linger in a different part of the image. In the Coloured Dove illusion (see below), a white dove appears on a coloured background. When the background is switched to white, the dove takes on a paler version of the original surrounding colour. The team hasn't yet figured out exactly why this happens. One theory is that the dove has actually taken on the background's complementary colour from the beginning, although we fail to perceive it until the background colour disappears."



Interactive Movie -CURBALL - by Arthur Shapiro
"If you look directly at the "spinning" ball in this illusion by Arthur Shapiro, it appears to fall straight down. But if you look to one side, the ball appears to curve to one side. The ball appears to swerve because our peripheral vision system cannot process all of its features independently. Instead, our brains combine the downward motion of the ball and its leftward spin to create the impression of a curve. Line-of-sight (or foveal) vision, on the other hand, can extract all the information from the ball's movement, which is why the curve disappears when you view the ball dead-on."

CONTRAST COLOUR
"If you stare at this rotating circle, you should see three concentric circles: pink, blue and green. But when the circle stops moving, you can see that the arcs that create these circles are actually all black."


More visual illusions: newscientist.com