depth cues Flashcards
depth perception
The ability to accurately estimate the distance of objects and therefore perceive the world in 3D
What are the two categories of depth cues
Bionocular (two eyes),
monocular(one eye)
Binocular depth cues
When both eyes work together in order to provide information to the brain about depth perception. two types- retinal disparity and convergence.
monocular depth cues
Only one eye is required to provide information the the brain about depth perception. two types- accommodation and pictorial cues
pictorial cues
Apart of monocular cues, any information conveyed to the observer of a two-dimensional image that gives the impression of 3-dimensional image.
What are the 5 pictorial cues
Linear perspective, interposition, texture gradient, relative size and height in visual field
Linear perspective
The apparent convergence of parallel lines as they recede into the distance.
Interposition
Occurs when one object partially blocks or covers another. The partially blocked object is perceived as further away than the object that obscures it
texture gradient
The gradual reduction of detail that occurs in a surface as it recedes into the distance.
Closer = Finely detailed
relative size
The tendency to perceive the largest object in the visual field to be closer. The smaller objects are perceived to be further away.
height in visual field
Refers to the location of objects in our visual field. Objects that are closer to the horizon are perceived as being further away, and vice versa.
accommodation
processes by which the lens changes shape in order to bring an object in focus on the retina. Monocular
retinal disparity
the difference between the view that each eye receives of a given object or scene. Binocular
convergency
when looking at a close-up object, your eyes angle inwards towards each other (you become slightly cross-eyed). Binocular
