Lecture 3

Question 1

three types of colour-sensitive cones

Answer 1

short, medium and long wavelenghts

Question 2

how do we perceive color

Answer 2

by measuring and combining the colored reflectances of neighbouring areas

Question 3

color schemes similar to RGB

Answer 3

CIELab
HSV

Question 4

HSV color space

Answer 4

separates hue and saturation

Question 5

XYZ

Answer 5

transformation from the color matching function to get rid of the negative part

Question 6

complementary color

Answer 6

Red
Green
Blue
Yellow
Orange

Question 7

Land’s effect

Answer 7

contextual information is needed to perceive a color

Question 8

color constancy

Answer 8

recognizing colors irrespective of illumination

Question 9

color opponency

Answer 9

our visual system takes into account the context of the image and the light source

Question 10

Responsible brain area for color constancy

Answer 10

V4

Question 11

where it happens the colour perception

Answer 11

retina

Question 12

the perceived color of a surface depends on the relative amount of…..

Answer 12

reflected complementary colors

Question 13

CieLab

Answer 13

separates illuminance

Question 14

color schemes similar to RGB

Answer 14

CieLab
HSV color space

Question 15

Why there is a negative part in the CIE spectrum?

Answer 15

for some cases we need to lower the amount of red to perceive the color

Question 16

Retinex theory

Answer 16

compute the color context and the reflectance of the neighboring area

Question 17

which two color spaces are suitable for capturing complementary colors

Answer 17

CIELab and HSV

Question 18

Damage in V4

Answer 18

blind to color

Question 19

Damage in v5

Answer 19

Blind to motion

( you see the bus coming and then is refin front of you)