1. Visual Perception Part B

2. Depth Perception Allows us to see three dimensions even though images on retina are two dimensional Allows us to judge distance Visual cliff experiment Depth perception is probably innate Monocular cues Binocular cues

3. Monocular Cues Interposition or Overlap Aerial or Atmospheric perspective Linear Perspective Light and Shadow

4. Binocular Cues Retinal Disparity: Your eyes are about 2-1/2 inches apart so your retinas receive different images. Your brain compares the images to judge how close something is.

5. Motion Perception Your brain perceives shrinking objects as retreating, growing objects as converging. Also perceives motion according to stroboscopic movement – like film animation. Phi phenomenon – a succession of lights creates the impression of movement Color Cosmic Ribbon

6. Perceptual Consistancy We can recognize objects without being deceived by changes in color, brightness, shape or size. Color Consistency: perceiving familiar objects as having consistent color, even if changing illumination alters the wavelengths reflected by the object.

7. Color Consistency

8. Relative Luminance Squares A & B are identical in color

9. Relative Luminance Squares A & B are identical in color

10. Shape & Size Consistency We perceive objects to have a constant size even if the image size on our retina changes.

11. Shape & Size Consistency Moon illusion: There are depth cues on the horizon. As it rises, it will still be the same size, but perceived as smaller because there are no objects for comparison.