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: 729831
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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