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Abstract

The results obtained from the series of subjective tests of colour rendering described in Part 1 are analysed using the theoretical model of the average observer described in Part 2. It is shown that it is valid to transform the observations of colour difference in the category scale into a subjective ratio scale using the method of Part 2. Further, this subjective scale is linearly related to the measured colour difference if a correction is made for colour adaptation. The just noticeable difference seen by the observers in the colour appearance of the eight Munsell samples is shown to be approximately five-and-a-half times the 'minimum perceptible colour difference' of MacAdam's observer. By making use of this relationship a just noticeable special colour rendering index difference is derived for individual test samples.

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References

Winch, G.T. , Trans. Illum. Eng Soc. (London), 28, 66( 1963).

Nickerson, D. , Illum. Engng, 53, 77 (1958).

Crawford, B.H. , Br. J. appl. Phys., 14, 319 (1963).

CIE Publication No. 13 (1965).

Judd, D.B. , MacAdam, D.L. , and Wyszecki, G. , J. opt. Soc. Am., 54, 1031 (1964). CIE Compte Rendu, Washington, 95 (E-1-3-1. Report) (1967),

Henderson; S.T. , and Halstead, M.B. , Die Farbe, Proc. Intl. Colour Conf, Lucerne (1965 ), Band 15, Heft 1/6, Part II, 135 (1966).

Halstead, M.B. , Morley, D.I. , Palmer, D.A. , and Stainsby, A.G. , Proc. AIC Congress 'Color 69', 2, 839 (1969).

Henderson, S.T. , and Halstead, M.B. , Br. J. appl. Phys., 3, 255 (1952).

Preston, J.S. , Br. J. appl. Phys., 14, 43 (1963).

10.

Bouma, P.J. , Philips tech. Rev., 2, 1 ( 1937).

11.

CIE Compte Rendu, Brussels, A, 107 (1959). CIE Compte Rendu, Vienna, A, 113 (1963).

12.

MacAdam, D.L. , J. opt. Soc. Am., 32, 247 (1942).

13.

Pracejus, W.G. , Illum. Engng, 62, 663 (1967).

14.

Torgerson, W.S. , Theory and methods of scaling, John Wiley, New York (1958).

15.

Swets, J.A. , Signal detection and recognition by human observers, John Wiley, New York (1964).

16.

Winch, G.T. , Harrison, W. , and Ruff, H.R. , Trans. Illum. Eng. Soc. (London), 16, 1 ( 1951).

17.

Winch, G.T. , and Ruff, H.R. , Trans. Illum. Eng. Soc. (London), 16, 13 (1951).

18.

Winch, G.T. , J. Instn elect. Engrs, 96, Pt. 2, 452 ( 1949).

19.

Winch, G.T. , GEC Jl, 16 (4), 197 (1949).

20.

Winch, G.T. , Instrument Practice, 137 (January 1951).

21.

Winch, G.T. , and Young, B.M. , GEC Jl, 18 (2), 88 (1951).

22.

Winch, G.T. , J. Instn elect. Engrs, 99, Pt. IIIA, 854 (1952).

23.

Winch, G.T. , and Young, B.M. , GEC Jl, 19 (4) (1952).

24.

Winch, G.T. , and Young, B.M. , Illum. Engng, 50, 353(1955),

25.

Winch, G.T. , Trans. Illum. Eng. Soc. ( London), 21, 91 (1956).

26.

Winch, G.T. , Trans. Illum. Eng. Soc. ( London), 28, 66 (1963).

27.

Winch, G.T. , Boshoff, M.C. , Kok , C.J. , and du Toit, A.G. , J. opt. Soc. Am., 56, 456 (1966).

Part 3: Analysis and conclusions

Abstract

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