Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Color Vision and Color Matching, Slides of Brain and Cognitive Science

The principles of color matching and trichromacy, explaining how the human eye distinguishes colors based on the absorption of light by cone cells. The indistinguishability of spectral distributions, scale invariance, additivity of matches, and the concept of trichromacy. It also mentions the standard deviation of receptor response differences and provides references to natural reflectance spectra.

Typology: Slides

2011/2012

Uploaded on 12/21/2012

umi
umi 🇮🇳

4.5

(13)

63 documents

1 / 26

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Retina Color
Docsity.com
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe
pff
pf12
pf13
pf14
pf15
pf16
pf17
pf18
pf19
pf1a

Partial preview of the text

Download Color Vision and Color Matching and more Slides Brain and Cognitive Science in PDF only on Docsity!

Retina Color

Color Matching Experiment

I(λ 1 )+ I(λ 2 ) + I(λ 3 ) I(λ)

Midget ganglion cells (P cells)

Small bistratified ganglion cells (K cells)

Parasol ganglion cells (M cells)

L and M

cones

Rods

L and M

cones

S cones

P cells (midget) M cells (diffuse)

K

cells

Docsity.com

Trichromacy

Let n 1 ( ) l , n 2 ( ) l ,and n 3 ( ) l be three spectral

distributions (primaries) such that ( R G 1 , 1 , B 1 ),

( R 2^ ,^ G 2^ , B 2^ )and^ ( R 3^ ,^ G 3^ , B 3^ )are linearly independent.

Then, for any arbitrary spectral distribution, n ( ) l ,

there always exist three constants, c 1 (^) , c and c 2 3 ,

such that

n º c n 1 1 (^) + c n 2 2 (^) + c n 3 3

These three constants are obtained by solving the three equations:

R º c R 1 1 (^) + c R 2 2 (^) + c R 3 3

G º c G 1 1 (^) + c G 2 2 (^) + c G 3 3

B º c B 1 1 (^) + c B 2 2 (^) + c B 3 3

Standard Deviation of Receptor Response Difference

S = squirrel monkey F = frog G = grey squirrel T = tree shrew

Regan et al. (2001)