Lecture 1

Question 1

computer vision

Answer 1

scientific filed that makes computers perceive the world through vision

Question 2

application of computer vision

Answer 2

object detection
object recognition
object segmentation

Question 3

optical flow

Answer 3

a technique used to describe image motion

Question 4

object segmentation

Answer 4

separation of an image from its background

Question 5

function of the retina

Answer 5

transduces incoming light into neural signals

Question 6

perception of the retina

Answer 6

higher resolution in the center and lower in the periphery

Question 7

receptors of the retina

Answer 7

rods and cones

Question 8

rods receptors respond to

Answer 8

light intensity

Question 9

cons receptors responds to

Answer 9

color wavelengths

Question 10

True or False

rods are color-sensitive

Answer 10

False

Question 11

blinds spot

Answer 11

where the optic nerve exits the eye

Question 12

where in the eye there is a higher density

Answer 12

at the fovea

Question 13

the function of the Lateral Geniculate Nucleus (LGN)

Answer 13

a gateway, sends information from the eyes (retina) to the visual cortex

Question 14

function of the primary visual cortex (V1)

Answer 14

detecting edges

Question 15

Higher Visual Cortices

Answer 15

• hierarchical organization
  V1-V2-V4-IT
• receptive fields: spatially and response-wise
• what pathway

Question 16

receptive fields

Answer 16

spatially - part of the visual field the neuron looks at

response-wise - kind of stimulus that will activate the neuron
they increase in size in the hierarchy of visual (ventral) processing, allowing to docs on more complex details of the image

Ex. The picture of the dog on the slide
(focusing on its spots - respond are V1)
focusing on the head - respond area IT)

Question 17

spatially receptive fields

Answer 17

part of the visual filed the neuron looks at

Question 18

response-wise receptive fields

Answer 18

kind of stimuli that will activate the neuron, increases the size in the hierarchy of visual processing

Question 19

invariant representation

Answer 19

Moving from low cortical areas (V1) to high cortical areas (IT).

our visual system can deal with recognizing images when they vary in different ways

Question 20

variant representation

Answer 20

pixels representation

Question 21

visual cortex processing

Answer 21

extracts information to support scene recognition

Question 22

Where does processing happen in the visual system

Answer 22

retina

Question 23

Invariance

Answer 23

the ability to recognize an object even when it’s appearance varies in different ways

Question 24

Vision

Answer 24

The process of extracting information about the external world from the light reflected or emitted by objects and surfaces

Question 25

Object recognition

Answer 25

The ability to accurately discriminate each named object or set of objects from all other possible objects

Question 26

“What” pathway

Answer 26

responsible for identification

comparing lowest vs highest level organization, all kinds of variations are captured well in “what pathway”
ex. identifying Brad Pit

Question 27

Manifold Model takeaway

Answer 27

the brain is doing untangled representation and make sure when the hierarchical level increases, the representation becomes invariant