Wednesday, October 2, 2013

Week 6: Top-down Visual Processing


Face in Trees Illusion

Here we have an optical illusion created using Photoshop to replicate a human female face formed by tree branches and birds. The eye naturally travels to the middle of the picture because the effective use of contrast and dead-space to help guide the eye right to the center. As your eye adjusts to the picture, you look outside the "Face" and realize up close that the image is just composed of a forest and a face shouldn't be there, just branches. Once you see the face (it becomes easier as you look at it from a distance) then you can't ever NOT see it, which is the goal of a lot of various optical illusions. Essentially the short term goal is you see a face, the long term goal is you see a creepy forest with birds flying through. What's interesting is the short term goal overtakes the long term and establishes dominance in your mind of what this picture represents. 

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