To me, the yellow appears brighter, more vivid, while the pink looks duller, too. The circles are all the same color and brightness (the RGB values are 255, 238, 138), but the ones with green stripes look yellow, and the one with red stripes look like a dull pink or coral. Credit: David Novick, used with permission If you still don’t believe me, here’s a far simpler example, again from Novick:Ī simple example of the Munker-White illusion, where the colors we perceive from the circles are affected by the stripes the circles are the same color. When you’re not looking directly at the balls, the color of the stripes pulls the color of the ball toward it, in a manner of speaking, so the green stripes make the ball look greener. This is called the Munker-White illusion (or sometimes just the Munker illusion), and it’s a powerful one. The left one has green stripes, the middle one red, and the right one blue. In the top row, note the colors of the stripes going across the balls. That can be manipulated using stripes of different colors, for example. But if I put up objects with other colors around it, the color we perceive changes a bit. If I put up an image of a red square, then (assuming you have normal color vision) it looks red. In a nutshell, we do perceive colors as they stand on their own, but also by contrast with colors around them. It’s… well, it’s irritating, a little bit. What’s funny is they look that way when I’m not looking directly right at them when I shift the focus of my eyes to a different place in the image the colors shift as well! Each ball looks somewhat brassy when I look right at it, but then shifts in color when I look away. The ones in the top row, from left to right, look greenish-yellowish, bronze, and blue-purple to me. When I look at the balls I see different colors. Behold.Īn animation switching between the full illusion and the image without the stripes across the balls. Colors exist objectively, and so when you see something that’s red, why then, it’s red. That’s one of the reasons I love them so.įor example, you might think what you see is what you get, especially with colors. They show us just where the wiring gets crossed from external reality to our perception of it in our skulls. When it comes to our eyes, one of the best ways to do this is with optical illusions. But when it doesn’t, ironically we can glean information about how our brains work, and how it connects with the senses. When this all works, it appears to be seamless. Sometimes it doesn’t (you misjudged how many apples you needed). That slab of meat in your skull takes all the data sent to it from your senses and does its best to turn it into information based on past experience. The crucial step in the metamorphosis from data to information takes place in our brains. Information is more complex it’s data put into context, interpreted to give you a better understanding… like knowing you have enough apples to make a pie. Do you know what the difference between data and information is? Data are raw facts, like how many apples you have.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |