摘要:

AbstractThe contributions of Dr. Deane Brewster Judd to colorimetry extended over five decades. Among the most crucial contributions to the development of modern colorimetry were his studies of colorimetric purity, relations among color‐mixture and luminosity data, visual sensibility to color differences, uniform chromaticity diagrams, Munsell notation and renotation, color names, color blindness and anomalies, color‐vision theory, and uniform color sca

ISSN:0361-2317    

DOI:10.1002/col.5080040402

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractThe backgrounds of the FCM metric, which was presented at Color 77, are discussed. Analysis of color‐discrimination data [threshold as well as color‐difference scaling data] and interpretation in terms of present conceptions on zonal processing of primary stimulations leads to principles that have to be respected by any metric. The FCM metric is a mathematical approximation of these principles. This metric presents a color‐order system inL a brectangular coordinates, which links up with the Munsell System. However, it is not a uniform color space. Difference scaling is handled by the FCM color‐difference metric. The CIELAB formula is in serious conflict with several of the principles de

ISSN:0361-2317    

DOI:10.1002/col.5080040403

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractThis is an account of French painting immediately before and after the turn of the twentieth century. Here the scientific revelations of such men as Maxwell and Helmholtz, introduced in France by Ogden N. Rood of the United States, played an important role in color expression.

ISSN:0361-2317    

DOI:10.1002/col.5080040404

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080040405

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractLine elements are mathematical formulations that describe subjective color differences in terms of model characteristics. An attempt is made to discover a trend in their development—a trend that is, interestingly, marked by gains in insight into the mechanism of color vision, rather than by distinct improvements in the description of color discrimination dat

ISSN:0361-2317    

DOI:10.1002/col.5080040406

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractThis article describes a methodology used to enable a meaningful comparison of the colour reproduction characteristics of a pair of colour photographic media, on the basis of an instrumental determination of the colour differences between sets of coloured test surfaces and their photographic reproductions. A figure of merit is proposed which can serve as a measure of the relative colour fidelity of the media being compared. This approach should yield a valid comparison between any two or more media having essentially the same display format and being subject to similar sets of controls and constraints.

ISSN:0361-2317    

DOI:10.1002/col.5080040407

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractThere is a need for standardization of the mathematical treatment applied to data generated by magnitude estimation techniques in colour scaling, in which hue, saturation [colourjulness]. and absolute or relative brightness are scaled by observers. An aspect of data analysis which has not been considered adequately is the method employed in averaging scaled data points in hue‐saturation space. This article suggests a possible approach: averaging on the assumption of global cylindrical polar coordinates describing hue and saturation, with rectangular Cartesian coordinates assumed for each individual cluster of points to be averaged. The method described here generates concentration ellipses which can be used to give discrimination data in any direction. The question of interobserver normalization is also addressed, as well as that of accuracy limitations of the proposed metho

ISSN:0361-2317    

DOI:10.1002/col.5080040408

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080040409

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080040410

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080040411

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY