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D. Macadam (1942)
Visual Sensitivities to Color Differences in DaylightJournal of the Optical Society of America, 32
D. Macadam (1937)
Projective Transformations of I. C. I. Color SpecificationsJournal of the Optical Society of America, 27
S. Newhall, D. Nickerson, D. Judd (1943)
Final Report of the O.S.A. Subcommittee on the Spacing of the Munsell ColorsJournal of the Optical Society of America, 33
R. Ball, G. Fry (1959)
Lines of constant hue in the blue corner of the color mixture diagram.American journal of optometry and archives of American Academy of Optometry, 36 4
E. Adams (1942)
X-Z Planes in the 1931 I.C.I. System of Colorimetry1Journal of the Optical Society of America, 32
G. Fry (1944)
A Quantitative Formulation of Color Mixture and Chroma Discrimination Data for DichromatsJournal of the Optical Society of America, 34
G. Fry (1965)
PRENTICE LECTURE. MECHANISMS SUBSERVING COLOR VISION.American journal of optometry and archives of American Academy of Optometry, 42
W. Wright, L. Martin (1947)
Researches on normal and defective colour visionOptometry and Vision Science, 24
Fry Fry (1986)
Dichromatic confusion lines and color vision modelsAm. Journ. Optom. and Physiol. Op., 63
G. Fry (1986)
Dichromatic Confusion Lines and Color Vision ModelsOptometry and Vision Science, 63
W. Wright, F. Pitt (1934)
Hue-discrimination in normal colour-vision, 46
D. Judd (1935)
A Maxwell Triangle Yielding Uniform Chromaticity ScalesJournal of the Optical Society of America, 25
Fry Fry (1965)
Mechanisms subserving color visionAm. J. Optom. Arch. Am. Acad. Optom., 42
W. Wright (1952)
The characteristics of tritanopia.Journal of the Optical Society of America, 42 8
G. Fry (1945)
A Photo-Receptor Mechanism for the Modulation Theory of Color VisionJournal of the Optical Society of America, 35
In 1945 I created a uniform chromaticity diagram which was a modification of the 1931 CIE Chromaticity Diagram. At that time I tried to relate it to a modulation theory of color vision which has proved to be untenable. In 1965 I switched to a zone theory of color vision which provides a more acceptable physiological basis for my UCS diagram. In the present article I want to explain how the two are related. I make use of three diagrams. The first (my uv diagram) is a color mixture diagram which deals with responses of the cones. The second (my un vn diagram) deals with the yellow‐blue and red‐cyan signals generated in two separate sets of fibers of the optic nerve. It is this independence which permits the relation between u″ and u on the one hand and between v″ and v on the other to be nonlinear. This is my UCS diagram. It yields better uniformity of discrimination steps across the diagram than is possible with a projective diagram. The second diagram is designed to deal with discrimination at the threshold level. The third diagram (my m n diagram) deals with the suprathreshold spacing of the Munsell colors. It is produced by scissoring the two sets of coordinate lines of the u″ v″ diagram around the standard stimulus C. This is related to the way in which signals in the two sets of fibers mix to produce intermediate colors.
Color Research & Application – Wiley
Published: Jun 1, 1988
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