COLOR - Wahoo

COLOR - Wahoo

COLOR A forced march through 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+B= M

B+G= C R+G+B = W Color mixing on the computer screen COLOR THEORY Subtractive color mixing

W-R= G+B =C W - G= R + B = M W-B = R+G =Y W-R-G-B = K COLOR THEORY Subtractive color mixing, continued WRG=

B WGB= R W-R-B =

G Color mixing on the printed page: Xerox solid ink colors Subtractive color mixing on the printed page:

the registration Subtractive mixing on the printed page: RED RED, Magnified

Subtractive mixing on the printed page: GREEN GREEN, Magnified Subtractive mixing on the printed page:

BLUE BLUE, Magnified Why does this work? Blue cones

Rods Green cones Red cones

1 496 419 0.9 531

558 0.8 Relative absorbance 0.7 0.6

0.5 0.4 0.3 0.2 0.1 0 300

350 400 450 500 wavelength (nm)

550 600 650 700

Im afraid youll find its a bit more complicated than that. Anatomy of the Retina Human eye at Molecular Expressions Optical Microscopy Primer

Receptive Fields A B C D

E Resolving Power Blind spot Nasal side

temporal side What receptors are in the fovea?

Color Opponency

Center/Surround Opponency individual photoreceptors RGB receptive field RGB Retina

to higher brain levels blue center/yellow surround double opponent ganglion cell

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