chapter 6 Flashcards
know definitions (26 cards)
____ the external world exists
realism
_____ the world depends on evidence of senses
positivists
______ parallel lines remain parallel as they extend in space?
(objects maintain same size as they move around in space)
how does this effect retina?
euclidian GEOMETRY
images projected onto retina are non-euclidean therefore, our brains work with non-euclidean all the time and we aren’t aware
______ probability of detecting a stimulus from having two or more samples
probability summation
what is binocular summation?
combo of signals from each eye to make performance on tasks better
________ : the diff between 2 retinal images of the same scene
binocular disparity
____ is the basis for stereopsis, a vivid perception of 3D
binocular disparity
what is a depth cue?
info about the 3rd dimension (depth) of visual space
what are the types of depth cue’s?
- monocular depth cue
- depth cue given from 1 eye - binocular depth cue
- depth cue given from 2 eyes
_____: a cue to relative depth order in which, for ex an object partially obstructs a view of another object
is this cue monocular or binocular?
occlusion
why we see T Junctions
Monocular
_________: depth cue that provides quantitative info about distance
is this cue monocular or binocular?
metrical depth cue
monocular
_____
; comparison of size between items w/out knowing the absolute size of either one
is this cue monocular or binocular?
relative size
monocular
______: for objects touching the ground those higher in visual field appear farther
is this cue monocular or binocular?
relative height
Monocular
________:
- depth cue
- from geometric fact
- same size item = smaller closer spaced images the farther away they get
is this cue monocular or binocular?
texture gradients
Monocular
texture gradients are a result of what combination
cues from relative height and relative size
_______: cue based on knowledge of typical size of objects
also, can provide precise metrical info
is this cue monocular or binocular?
familiar size
Monocular
the cue or familiar size often works in conjunction w/ cue of
relative size
________: depth cue that could specify, for example, that object A is 2x as far as object B without providing info of absolute distance
is this cue monocular or binocular?
relative metrical cue
Monocular
_____ depth cue that provides quantifiable info about distance.
is this cue monocular or binocular?
absolute metrical depth cue
MONOCULAR
________: depth cue based on implicit understanding that light is scattered by the atmosphere and more distant objects appear fainter, bluer, less distinct
is this cue monocular or binocular?
aerial perspective
Monocular
- descrive linear perspective
- is linear perspective is this cue monocular or binocular?
- lines that are parallel in the 3d world will appear to converge in a 2D IMAGE AS THEY EXEND INTO DISTANCE
describe vanishing point
is it is this cue monocular or binocular?
point where all parallel lines converge
Monocular
______: distance/depth cue used by artists to depict 3D in 2D
is this cue monocular or binocular?
pictorial depth cue
Monocular
what is anamorphosis
is this cue monocular or binocular?
use of rules of linear perspective to creates a 2D image distorted until u look from a special angle.
monocular
