COGS 100 Lecture Notes - Lecture 23: Anne Treisman, Divisor, Computer Vision

• School: Queen's University
• Department: Cognitive Science
• Course: COGS 100
• Professor: Farhana Zulkernine

Document Summary

Human visual system: the visual system of 32 separate systems, each specializing in a different visual characteristics such as colour, motion, location, and other visual properties, how our brains use the information that it receives. This is also known as stereopsis or binocular depth perception: lot of processing is done by the human mind to do this conversion and build a comprehensive 3d world view. In real world scenarios context often helps in cognition: what are the good features. Invariant features are aspects of an object that remains constant: object constancy problem in perception focuses on identifying such invariant features for object recognition. Irvin biederman proposes a 3d feature extraction theory for 3d objects from a limited set of 3d features called geons. Invariant: identifiable from different perspectives: discriminable: differs from others from any angle, noise resistant: can be recognized even of partially obscured.