PS_Motion_1 - Motion Perception Uses of motion information...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Motion Perception Uses of motion information: Detection Grouping Distance Shape Heading Measuring motion information: Motion measurement mechanisms Correspondence problem Aperture problem Brain areas
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Detection The image of an object must move on the retina or it will disappear. Examples: stabilized images, retinal vasculature. Grouping Image features that move together tend to be grouped together (Gestalt principle of common fate).
Background image of page 2
3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Motion cues to distance. When fixating the horizon while translating in a car or train, the nearer an object the faster it moves across the retina. When fixating a closer object while translating, the further an object from the fixated object the faster it moves across the retina.
Background image of page 4
5 Demonstration of shape from motion. If small lights are attached at each joint in the human body, the static pattern of lights is nearly incomprehensible. However, as soon as the person moves the scene becomes easy interpret. For example, here are the static patterns for two people dancing. A second demonstration in class showed random dot movies of a rotating objects.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/12/2008 for the course PSY 323P taught by Professor Geisler during the Spring '08 term at University of Texas.

Page1 / 15

PS_Motion_1 - Motion Perception Uses of motion information...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online