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COLOR A forced march through COLOR A forced march through

COLOR A forced march through - PowerPoint Presentation

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Uploaded On 2018-03-17

COLOR A forced march through - PPT Presentation

Color theory Anatomy of the retina Terminology Hue Brightness Saturation Resolving power Additive color mixing Subtractive color mixing COLOR THEORY Additive color mixing R G Y R ID: 655151

mixing color printed subtractive color mixing subtractive printed page theory blue retina magnified inhibition excitation green opponency center surround

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Presentation Transcript

Slide1

COLOR

A forced march through

Color theory

Anatomy of the retinaSlide2

Terminology

Hue

Brightness

Saturation

Resolving power

Additive color mixing

Subtractive color mixingSlide3

COLOR THEORY

Additive color mixing

R +

G =

Y

R +

B =

M

B

+

G =

C

R + G + B =

WSlide4

Color mixing on the computer screenSlide5

COLOR THEORY

Subtractive color mixing

W - R =

G + B

W - G=

R + B

W - B =

R + G

W - R - G - B =

K

= M

= Y

= C Slide6

COLOR THEORY

Subtractive color mixing, continued

W – R – G =

W – G – B =

W

-

R - B

=

G

R

B Slide7

Color mixing on the printed page:Xerox solid ink colorsSlide8

Subtractive color mixing on the printed page:the registrationSlide9

Subtractive mixing on the printed page:REDSlide10

RED, MagnifiedSlide11

Subtractive mixing on the printed page:GREENSlide12

GREEN, MagnifiedSlide13

Subtractive mixing on the printed page:BLUESlide14

BLUE, MagnifiedSlide15

Why does this work?Slide16

I’m afraid you’ll find it’s a bit more complicated than that.Slide17

Anatomy of the Retina

Human eye

at Molecular Expressions Optical Microscopy PrimerSlide18

Receptive FieldsSlide19

Resolving PowerSlide20

Blind spot

Nasal side temporal sideSlide21

What receptors are in the fovea?

●●

●●Slide22

Color OpponencySlide23

Center/Surround Opponency

R G B

R G B

inhibition

inhibition

excitation

excitation

excitation

inhibition

to higher brain levels

blue center/yellow surround double opponent ganglion cell

Retina

receptive field

individual photoreceptors