SandP: Object Recognition Flashcards
1
Q
- Bottom Up Processing
- Top Down Processing
- Deja Vu
A
- Refers to object recognition by parallel processing. The brain looks at the individual parts before deciding what the object is.
- Utilizes memories and past experiences in deciding what an object is.
- The mind relies on bottom up, but recognizes the object quicker than it thought it would due to top down.
2
Q
-Perceptual Organization
A
-Refers to the ability to use top-down and bottom-up in tandem with all other sensor clues about an object, to create a complete picture or idea. EX: even if I can’t see all of the car, I know its a car
3
Q
- How is the form of an object determined?
- How is the motion of an object perceived?
- What is Constancy
A
- Through parallel processing (bottom up and top down) and feature detection.
- By magnocellular cells
- The idea that an object maintains its brightness, size, and shape regardless of whats happening in the environment
4
Q
- What is the meaning of gestalt principles?
- Law of Proximity
- Law of Similarity
- Law of Good Continuation
- Subjective Contours
- Law of Closure
A
- There are ways for the brain to infer missing parts of a picture when a picture is incomplete.
- objects close together tend to be perceived as one unit (multiple circles in the shape of a triangle)
- objects that are similar tend to be grouped together, we see the big circles that form a triangle in a sea of small dots and vice versa.
- objects that follow in the same pathway tend to be grouped together. A wavy line over a saw tooth line, is seen as two separate lines not as one combined line.
- Perceiving shapes and objects that are not actually present. I see a white square because 4 triangles outline its side and the cut pie charts are its corners.
- Objects perceived as more close or complete than they really are. We don’t see 4 right angles, we see an almost complete square.
5
Q
-Law of Pragnanz
A
- The perceptual organization will always be as regular, simple, and symmetric as possible
