Texture pop-out based on orientation.
Texture Segregation
The geometry of attention: why some things just stand out.
🧐 What do you see?▼
A grid of identical lines is displayed. Even though they are all the same color, you can clearly see a central "square" area where the lines are tilted.
🧠 Why this works▼
The human visual system is hard-wired for Preattentive Processing. Before you even "look" at the image, your primary visual cortex (V1) detects gradients in Orientation.
This "Texture Pop-out" is what allows animals to spot a camouflaged predator—the breaking of a pattern creates a high-priority "alert" signal in the brain.
🧪 Try variations▼
Decrease the Intensity. As the lines become closer to parallel, the central square eventually vanishes, leaving a single uniform texture. This reveals the Just Noticeable Difference in orientation.