Lecture 6: Depth Perception Flashcards
Figure Ground Separation with example
Two images in one image. E.g image where you see face and candlestick
Nature over nurture
Nativism
Nativism
perception is a result of the inherited competency of the perceiver to synthesise visual output
Nurture over nature
Empiricism
Empiricism
perception lies with learned interactions between perceiver and the environment
5 Principles of Figural Organisation
1) Proximity
2) Similarity
3) Closure
4) Symmetry
5) Good continuation
Principle of Proximity
Elements close to one another tend to be seen as a perceptual figure or unit. E.g. dots which are close together, some look like rows or columns depending on how they are arranged
Principle of Similarity
Similar objects tend to be perceptually grouped together. E.g. circles and crosses arranged together, if circles are shaped in a triangle the triangle stands out because circles are different to crosses
Principle of Closure
Spaces enclosed by contours are more easily seen as figures
Principle of Good Continuation
Elements appear to follow in same direction will be grouped together. E.g snail swirl
Principle of Symmetry
Symmetrical areas tend to be perceived as figures, objects that face each other and symmetrical easier to be perceived
Three considerations to Gestalt approach
1) perceptual competencies are inherited (nature)
2) whole is greater than sum of its parts
3) organisation mechanisms operate automatically
Issues with Gestalt approach
how do we see 3-d world when all we have is a 2-d retinal image
How is the third dimension constructed
cues
Three types of cues
1) pictorial depth cues
2) motion cues
3) physiological cues
