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Background
- Your brains are sensitive to brightness, tilt, and movement and once taken away such elements as brightness, your brain will fill in the gaps of what should be there. This experience is called after image.
- You’ve probably experienced this many times before without even knowing it! Think about a time that you looked into a bright light for too long. When you looked away, you probably saw the light’s afterimage
How
One of the best examples of psychological illusion is the Hermann Grid. When you’re looking directly at a Hermann Grid, you see a white grid with black squares. If you move your eyes across the pattern, you also see grey spots or smudges where the black lines cross over each other.
Explanation
This is due to the high contrast between black and white, which tricks your brain into seeing the grey spots.
Example Picture in Rhino
Rules
Rules are simple
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You can fool eye with three different types of change—brightness, movement, tilt
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- Create high contrast images side by side and array it for a reasonable number of times to see the change in brightness.
- For tilt, create an object that has one side with high contrast color and the other with low contrast. Then tilt it for a fixed angle for an iteration of reasonable number both vertically and horizontally to experience the change.
Resources for You
Blackbox
Rhino File
Example of tilt illusion
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Rules for Creation
- Does this only work with ellipse? No, circles and ellipse work best but triangles and rectangles work as well.
- The reason we put another small circle is to make it more detailed
- The image should be big enough to make your eyes constantly move
Another Brightness Illusion
