6.1 Computational Problems in Object Recognition

Question 1

object consantcy

Answer 1

refers to our amazing ability to recognize an object in countless situations.

Question 2

viewing position

Answer 2

sensory information depends highly on your viewpoint, which changes not only as you view an object from different angles, but also when the object itself moves and thus changes its orientation relative to you. The human perceptual system is adept at separating changes caused by shifts in viewpoint from changes intrinsic to an object itself. The sensory system automatically uses any sensory cues and past knowledge to maintain object constancy.

Question 3

Illumination

Answer 3

while the visible parts of an object may differ depending on how light hits it and where shadows are cast, recognition is largely insensitive to changes in illumination.

Question 4

Context

Answer 4

objects are rarely seen in isolation. People see objects surrounded by other objects and against varied backgrounds. Yet we have no trouble separating