ISSN:0361-2317    

DOI:10.1002/col.5080110302

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

年代:1986

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080110303

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

年代:1986

数据来源: WILEY

摘要:

AbstractWe are pleased to initiate, with this issue, the column “Talking About Color …”, which Professor W. David Wright has agreed to write for this journal. It is indeed a privilege to provide, on a continuing basis, thoughts about color from this distinguished colorist and educator. Our thanks go also to the incoming Editor‐in‐Chief, Rolf G. Kuehni, for suggesting and arranging for Dr. Wright's column. We expect it to appear in e

ISSN:0361-2317    

DOI:10.1002/col.5080110304

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

年代:1986

数据来源: WILEY

摘要:

AbstractFollowing the CIE guidelines for coordinated research on colour‐difference evaluation, sets of dyed wool samples were produced near each of the five CIE reference colours, the colour differences within each set ranging from 1 to 9 CIE‐LAB units. Ratio assessments were used to determine discrimination ellipsoids for illuminants D65and A. Ratio and grey‐scale assessments involving pairs from all five colours were used to bring the visual data onto a common scale consistent with previous results. The ellipsoids for the red and green centres were compared with those obtained previously for the same centres. The agreement was rather better for the green colour, even though the substrates and sizes of colour‐differences were different in this case. The chromaticity‐discrimination ellipses generally agreed well with those obtained earlier for similar colours. The CMC (1 : 1) formula agreed better with the experimental results than did the CIELA

ISSN:0361-2317    

DOI:10.1002/col.5080110305

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

年代:1986

数据来源: WILEY

摘要:

AbstractDifferences between chromatic adaptation and color constancy are discussed, in order to call into question the commonly held view that chromatic adaptation is the mechanism of color constancy. Whereas chromatic adaptation requires many seconds of time and occurs for simple visual scenes, color constancy asserts itself immediately and is most powerful in complex visual scenes. Furthermore, models of chromatic adaptation are not so illuminant invariant as other models of color vision. Therefore, a new operational foundation for color constancy is proposed, and existing non‐adaptation models of color constancy are enumerated for future test

ISSN:0361-2317    

DOI:10.1002/col.5080110306

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

年代:1986

数据来源: WILEY

摘要:

AbstractPolymer liquid crystals produce color by light interference from their molecular layers. The colors show additive properties, are highly saturated, have an expanded color gamut, and change with angle of viewing. They produce more stable and durable coatings than most other liquid crystals and they adhere well to the substrate. Experimental work was carried out confirming the above properties. It has been also demonstrated that the spectral reflectance of colored substrates can be modified by coating them with polymer liquid crystals. In addition to painting and sculpture they are also of interest in a wide variety of decorative uses and in light transmission applications such as in stained glass. Examples using these materials are shown and discussed.

ISSN:0361-2317    

DOI:10.1002/col.5080110307

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

年代:1986

数据来源: WILEY

摘要:

AbstractThe question of a fundamental aesthetics and, derivable from it, a harmony based on rational principles, is an old one. A remarkable attempt at an answer is that provided some 100 years ago by the French “psychobiophysicist” Charles Henry (1859–1926). In 1888 he published a color circle and an aesthetic protractor with which a systematic evaluation of colors and forms for their aesthetic qualities was possible. Both the circle and the protractor, were based on Henry's psychophysiological principles of dynamogeny and inhibition. A theory of rhythm was added by Henry related to prime numbers or their reciprocal fractions. Thus, an aesthetics founded upon what Henry considered to be sound scientific principles resulted. Henry's ideas and theories had a considerable impact on contemporary neo‐impressionist artists, particularly George Seurat and Paul

ISSN:0361-2317    

DOI:10.1002/col.5080110308

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

年代:1986

数据来源: WILEY

摘要:

AbstractThis article provides a brief historical overview of the development of building‐colour standards in Britain. It describes the current standards and attempts to clarify these with reference to their contribution to the debate on the development of international building‐colour standa

ISSN:0361-2317    

DOI:10.1002/col.5080110309

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

年代:1986

数据来源: WILEY

摘要:

AbstractAn expression is derived for the spectral radiance factor of a thick sample of material which scatters and absorbs light, and to which has been added a fluorescent dye. It is also shown how to work backwards, calculating absorption and emission spectra of the dye from measurements on dyed and undyed samples. This theory has practical application in colorant formulation, and examples using up to three dyes to colour paper are discussed.

ISSN:0361-2317    

DOI:10.1002/col.5080110310

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

年代:1986

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080110311

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

年代:1986

数据来源: WILEY