ISSN:0361-2317    

DOI:10.1002/col.5080140202

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

年代:1989

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080140203

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

年代:1989

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080140204

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

年代:1989

数据来源: WILEY

摘要:

AbstractSuppose that we had a complete, utopian understanding of the workings of the nervous system. Would we thereby know all that there is to know about subjective sensory experience? It has been maintained that we would not, and that although sensory experiences are caused by brain events, they cannot be identical with these events. We shall consider three arguments that purport to lead to this conclusion, and discover that each of them is defective. It will then be argued that the question of whether sensory experiences are identical with brain events is an empirical one, to be settled by future science. An affirmative answer will require that the phenomenology be properly regimented, and shown to be isomorphic with an appropriate subset of neural processes. Although the realization of these conditions must be regarded as utopian, contemporary visual science has made progress in this direction.

ISSN:0361-2317    

DOI:10.1002/col.5080140205

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

年代:1989

数据来源: WILEY

摘要:

AbstractThe membership function describing the degree of association of a color sample to a specified color name is estimated experimentally through fuzzy statistical experiment. Here, we are interested in the surface color of opaque materials including red, orange, yellow, green, blue, purple, white, gray, and black. The characteristics of the membership function for these colors are found to be affected appreciably by the light source used.

ISSN:0361-2317    

DOI:10.1002/col.5080140206

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

年代:1989

数据来源: WILEY

摘要:

AbstractThe Natural Color System (NCS) is analyzed by using a nonlinear color‐appearance model. Perceptual uniformity was examined for each of the NCS attributes of blackness (s), chromaticness (Cr), and hue. Some nonuniformities were found in chromaticness and hue spacing, which were probably the result of the assessing and scaling method used in developing the system. In addition, a colorimetric interpretation is given to a principal plane in the NCS consisting of the colors with (s,Cr) = (50,0) and (0,100). The colors with (0,100) have different values ofYfor different hues. Based on the analysis, a method is developed to predict the NCS attributes from the valuesx, y, Yof an object color by using the nonlinear color‐appearance model. The present analysis clarifies the importance of the NCS system in studying the color appearance of object col

ISSN:0361-2317    

DOI:10.1002/col.5080140207

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

年代:1989

数据来源: WILEY

摘要:

AbstractIn this article we argue that colour order systems represent the conceptualisations of experts and that little attention has been given to how nonexperts in color theory and terminology conceive of colour. Following previous work with British architects1,2, our attention was directed toward this group as a major example of users of colour who are, from the point of view of theoreticians, nonexperts. Given the difficulties of revealing conceptual structures, architects' natural terminology provided the focus of the study. Two tasks were administered: the first sought to identify the main colour terms architects used, while the second sought to group these terms under meaningful descriptors. The main questions of interest concerned the identity of such descriptors, their conceptual organisation, and the correspondence between architects' descriptors/terms and those used in colour‐order system

ISSN:0361-2317    

DOI:10.1002/col.5080140208

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

年代:1989

数据来源: WILEY

摘要:

AbstractThe problem that color constancy models address is one of recovering the reflectances of a surface under different illuminants and spatial configurations. As models of the human visual system, they should recover surface reflectances when the human visual system recovers those reflectances and fail when the human visual system fails to recover those reflectances. Unfortunately, it is difficult to determine just when these models will recover surface reflectances and when they will fail. We introduce a theory of influence that quantifies the degree to which the lightness calculated for a given surface element is influenced by the receptor responses to other elements. Influence theory is shown to be a very useful tool for highlighting testable predictions that can discriminate among color constancy models without having to determine directly when they will recover surface reflectances. This technique for generating empirical predictions is demonstrated by studying the effects of choosing different normalizing functions on an asymptotic retinex algorithm.

ISSN:0361-2317    

DOI:10.1002/col.5080140209

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

年代:1989

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080140210

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

年代:1989

数据来源: WILEY

ISSN:0361-2317    

DOI:10.1002/col.5080140211

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

年代:1989

数据来源: WILEY