GOLDSTEIN CHAPTER 5:
PERCEIVING OBJECTS AND SCENES
Viewpoint invariance: the ability to recognize objects from different views (if you look at a
cat from the top and from its tail, it is still a cat)
Perceptual Organization: the process by which elements in the environment become
perceptually grouped to create our perception of objects. It has 2 components:
• Grouping: the process which the visual elements are put together into units
• Segregation: the process of separating one area or objects from another
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Gestalt Psychology:
the whole is different than the sum of its parts
(elements grouped together create larger objects)
Apparent movement: although movement is perceived,
nothing is actually moving
There are two separate lights that flash independently.
But we perceive them as on moving light.
, Illusory contours: the edges that create the triangle are called illusory contours
because there are no actual edges.
Principles of Perceptual Organizations:
Determines how elements in a scene become grouped together
Principle of good continuation:
• Points that result in straight or smoothly curving lines are seen as
belonging together
• Objects that are partially covered by other objects are seen as
continuing behind the covering object.
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