Color constancy

About this app

A procedurally rendered still-life scene with warm light and a bluish shadow: an eyedropper proves that a "white" patch in shadow and a "gray" patch in light have exactly identical RGB values. A white-balance slider flips the same pixels between white-gold and blue-black (The Dress mechanics); a context toggle hides the lighting cues — and shows why industrial image processing needs controlled lighting and color calibration.

Subject: Perception & Illusion

More from Perception & Illusion

• Adversarial examples
• Viewpoint illusions 3D
• Mental rotation (Shepard & Metzler)
• Optical illusions
• Place cells & grid cells (3D)

A VisuApp by heyprof: interactive, free in your browser, no sign-up. What is a VisuApp? · All apps