Abstract

The evaluation of the noticeability of chromaticity differences between very small areas is needed in studies of color graininess. In the present work, color-discrimination data for eleven well-selected chromaticities were determined by a single observer using a matching method for fields subtending (a) 3′ and (b) 4.4°. The data for the large field agree fairly well with those previously published. The comparable results for the 3′ field have been summarized for convenience in the form of a plane uniform chromaticity diagram in which the standard CIE coordinate network is curvilinear. The diagram represents a simplified approximation to the actual results, which would require a curved surface for accurate representation. Nevertheless, the present diagram is suitable for evaluating the large chromaticity differences that are encountered in color graininess and in most other applications of small-field color-discrimination data.

© 1959 Optical Society of America

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References

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  1. K. F. Stultz and D. A. Koch, J. Opt. Soc. Am. 46, 832 (1956).
    [Crossref]
  2. D. B. Judd, J. Opt. Soc. Am. 25, 24 (1935).
    [Crossref]
  3. G. N. Rautian and V. I. Demkina, Proc. Acad. Sci. U.S.S.R. 66, 859 (1949).
  4. D. L. MacAdam, J. Opt. Soc. Am. 40, 589 (1950).
    [Crossref]
  5. W. R. J. Brown and D. L. MacAdam, J. Opt. Soc. Am. 39, 808 (1949).
    [Crossref] [PubMed]
  6. D. L. MacAdam, J. Opt. Soc. Am. 32, 2 (1942).
    [Crossref]
  7. L. Silberstein, J. Opt. Soc. Am. 33, 1 (1943).
    [Crossref]
  8. D. L. MacAdam, J. Franklin Inst. 238, 195 (1944).
    [Crossref]
  9. D. L. MacAdam, J. Opt. Soc. Am. 33, 18 (1943).
    [Crossref]
  10. G. W. Ingle and L. Rudick, J. Opt. Soc. Am. 43, 501 (1953).
    [Crossref] [PubMed]
  11. H. R. Davidson and J. J. Hanlon, J. Opt. Soc. Am. 45, 617 (1955).
    [Crossref]

1956 (1)

1955 (1)

1953 (1)

1950 (1)

1949 (2)

G. N. Rautian and V. I. Demkina, Proc. Acad. Sci. U.S.S.R. 66, 859 (1949).

W. R. J. Brown and D. L. MacAdam, J. Opt. Soc. Am. 39, 808 (1949).
[Crossref] [PubMed]

1944 (1)

D. L. MacAdam, J. Franklin Inst. 238, 195 (1944).
[Crossref]

1943 (2)

1942 (1)

1935 (1)

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Figures (4)

F. 1
F. 1

Constant luminance-discrimination ellipses (large: 3′ field, small: 4.4° field).

F. 2
F. 2

Constant luminance-discrimination ellipses for 3′ field (ellipses enlarged 3 1 3 times).

F. 3
F. 3

Constant luminance-discrimination ellipses for 4.4° field (ellipses enlarged 3 1 3 times).

F. 4
F. 4

Curvilinear CIE coordinate system on which constant luminance-discrimination ellipses for 3′ field are as nearly equal-size circles as possible in a plane.

Tables (1)

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Table I Coefficients of discrimination equation.

Equations (7)

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g 11 Δ x 2 + 2 g 12 Δ x Δ y + g 22 Δ y 2 + 2 g 13 Δ x Δ L + 2 g 23 Δ y Δ L + g 33 Δ L 2 = 1 ,
Δ L = 0.2 Δ log Y = Δ Y / 11.53 Y .
( X Y Z ) = ( a i k ) ( R G B ) ,
d R d S R = 1 L , d G d S G = 1 M
d B d S B = 1 N .
T = ( S L D 1 S M D 2 S N D 3 S L E 1 S M E 2 S N E 3 k L R k M G k N B ) ,
g i k = T C 1 T ,