Topic 4: Perceiving Objects and Scenes Flashcards
Why do computers fail to perceive ?
Don’t have past experience
What is viewpoint invariance?
Object properties don’t change when the object turns
Objects can look different from…
different viewpoints or angles
Perceptual Organization
Process by which elements are grouped and segregated to create a perception
Rejected the idea that perceptions were formed by “adding up” individual stimuli
What approach was this?
Gestalt approach
- An illusion where movement is perceived when nothing is moving
- Produced when two objects separated in space are presented rapidly one after another with a very brief delay
What is this example of gestalt approach called?
Apparent motion
What is Gestalts principle of perceptual organization- principle of good continuation?
Give an example or 2.
2 points
When things are partially covered, they continue beyond that
Example- shoe lace in shoes or rope
What is Gestalts principle of perceptual organization- Principle of good figure/simplicity/pragnanz?
Interpreting things in the simplest way
Ex- interpreting a group of dots as forming a triangle rather than a random collection of dots.
What is Gestalts principle of perceptual organization- Principle of similarity
Similar things appear grouped together
What is Gestalts principle of perceptual organization- Principle of proximity
Things near each other appear to be grouped together
What is Gestalts principle of perceptual organization- Principle of common fate
Things moving in the same direction appear to be grouped together
What is Gestalts principle of perceptual organization- Principle uniform connectedness
Connected regions/objects with similar visual properties appear to be grouped together
What is Gestalts principle of perceptual organization- Principle of common region
Things that are in the same region of space appear to be grouped together
In principle segregation what is figure ground segregation?
The perceptual separation of an object (figure) from its background (ground)
Proposes that objects are comprised of individual geometric components called geons, and we recognize objects based on their arrangement
What idea is this?
Recognition by components (RBC)
