handprint : color vision (original) (raw)
light: the spectrum we can see
describing light & colorvariations in natural light
design of the eyethe optical eyeretinaphotoreceptor cellsphotopigment molecules
three plus one light receptorsfour types of human photopigmentmeasuring photoreceptor light sensitivityfive views of the cone fundamentals
photopic & scotopic visiondaylight (photopic) sensitivitydim light (scotopic) light sensitivitymesopic light sensitivity
trichromatic mixturesthe principle of univariancethe cone excitation spacethe chromaticity plane
constraints on color visionstandard assumptionsmonochromatic visiondichromatic visiontrichromatic visionwhy not 4 or more cones?why 3 badly spaced cones?
measuring light & colorradiometryphotometrycolorimetry
the spatial geometry of lightthe nine photometric elementsluminous fluxluminous intensitythe viewing geometryilluminanceluminanceretinal illuminance
the colormaking attributesbrightness/lightnesshuehue purityoptimal color stimuli
⎯ the geometry of color perception ⎯
newton's hue circlecolor similaritynewton's opticksthe hue circlethe analysis of whitecomplementary mixturesnewton's legacy
hering's opponent processeshering's urfarbenhering's opponent processesthe opponent functionswhat are the opponent functions?
from cones to colorsa geometrical color standardcone excitation spacecone contrast spaceperceptual opponent spacenecessary additional transformations
the geometry of colormaking attributesmeasuring perceptual discriminationluminance discriminationhue discriminationhue purity discriminationcolor attributes combined
individual differences in color experience
basic forms of color
unrelated vs. related colorunrelated colorrelated color
self luminous vs. surface color
local vs. veiled color
plane vs. depth color
summary of basic forms of colorcurrent terminology and concepts
⎯ synthesis of surface colors ⎯
optimal circuits & analysis colorsyellow & cyan circuitsgreen & magenta circuitssummary of analysis optimal colors
perceptual landmarks & the optimal circuits
a 70 nm optimal circuit
additive changes in hue & luminance
natural chroma benchmarks
what is the perceptual structure for?
other visual structure
⎯ adaptation, anchoring & contrast ⎯
luminance adaptationsize of the challengethe form of adaptationadaptation mechanismslight & dark adaptationmesopic color appearance
brightness, lightness & anchoring
chromatic adaptationphotoreceptor adaptationsuccessive color contrastcomplementary colorscorresponding colors
chromatic inductionchromatic contrastchromatic assimilation
luminance & color changes
color constancy
⎯ additive & subtractive color mixing ⎯
additive color mixingadditive mixtures occur in the eyethe additive "primary" lightsthe "white" color theoryreal lights and true primariesa scientific theory of color vision
subtractive color mixingsubtractive mixtures occur in substancesthe subtractive "primary" colorswhat is "primary" about subtractive primary colors?ideal subtractive primariesmixing subtractive primariesdon't confuse additive & subtractive mixturespartitive mixture
substance uncertaintymaterial colors and visual colorsvisual color can't predict material mixturesubstance uncertainty in paintsthe color is in the mixture
⎯ do "primary" colors exist? ⎯
the ancient primaries
the painter's primaries
Newtonian color confusions
material trichromacy
comprehensive color models
perceptual trichromacythe trichromatic theorymaxwell's trichromatic measurementsmaxwell's imaginary primaries
colorimetrythe metameric foundationgrassmann's lawscolor matching experimentsindividual differencesthe white pointreal color matching functionssize of the color stimulusimaginary color matching functionsthe chromaticity diagramthe cie Yxy standard observer
imaginary or imperfect primariestwo primary paradoxesthree artists' misconceptions
the evolution of color modelscolor namingcolor mixturecolor modelscolor model assumptions
Swedish Natural Color Systemfour components of ncsthe ncs color modelusing and interpreting the ncs
Munsell Color Systemgeometry of the munsell systemthe munsell renotationsthe asymmetry of color spacethe limited gamut of color atlases
OSA uniform color scalesrhombohedral latticethe osa uniform color spacecolor space is noneuclideanimages of the OSA uniform color scales
CIELUV uniform color spacecolor matching and color differencesthe cieluv dimensionsthe uniform color spacecurrent use of cieluv
CIELAB uniform color spacethe cielab dimensionsthe uniform color spacecurrent use of cielabthe CIELAB a*b* plane
CIECAM color appearance modelthe ciecam02 dimensionsgraphical analysis of ciecamthe ciecam color spacefuture prospectsthe CIECAM acbc plane