Perceiving and Recognizing Objects Flashcards
A failure to recognize objects in spite of the ability to see them. Agnosia is typically due to brain damage.
agnosia
An inability to recognize faces.
prosopagnosia
A contour that is perceived even though nothing changes from one side of it to the other in an image.
illusory contour
A cue to relative depth order in which, for ex one object obstructs the view of part of another object
Occlusion
A loosely defined stage of visual processing that comes after basic features have been extracted from the image (low-level, or early, vision) and before object recognition and scene understanding (high-level vision).
middle (midlevel) vision
Carving an image into regions of common texture properties.
texture segmentation
A set of rules describing which elements in an image will appear to group together. The original list was assembled by members of the Gestalt school of thought.
Gestalt grouping rules
A region of extrastriate visual cortex in humans that is specifically and reliably activated by human faces.
fusiform face area (FFA)
A Gestalt grouping rule stating that the tendency of two features to group together will increase as the distance between them decreases.
proximity
A Gestalt grouping rule stating that the tendency of two features to group together will increase as the similarity between them increases.
similarity
elements that move in the same direction and at the same speed are grouped together
Common fate
A Gestalt grouping rule stating that two elements will tend to group together if they seem to lie on the same contour.
good continuation
A rule for figure-ground assignment stating that parallel contours are likely to belong to the same figure.
parallelism
A visual stimulus that gives rise to two or more interpretations of its identity or structure.
ambiguous figure
