DocumentCode :
1814306
Title :
Cone ratios cannot discriminate between reflectance and illuminant borders
Author :
Fan, Lawrence ; Finkel, Leif ; Buchsbaum, Gershon
Author_Institution :
Dept. of Bioeng., Pennsylvania Univ., Philadelphia, PA, USA
fYear :
1996
fDate :
14-15 Mar 1996
Firstpage :
32
Lastpage :
33
Abstract :
Invariance of cone ratios has been proposed to be a possible basis for perceptual color constancy. Cone excitation ratios were computed across reflectance edges viewed under different illuminants as well as across illuminant edges. The results of the authors´ computations suggest that such a mechanism is incomplete. Cone ratios maintain color constancy across reflectance edges under a variety of illuminants, yet they are unable to discern whether a border is a reflectance edge or an illuminant edge
Keywords :
cellular biophysics; colour vision; eye; reflectivity; visual perception; cone excitation ratios; illuminant borders; illuminant edge; perceived surface color; perceptual color constancy; reflectance borders; reflectance edge; reflectance edges; Area measurement; Biomedical engineering; Books; Humans; Interpolation; Layout; Power distribution; Reflectivity;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Bioengineering Conference, 1996., Proceedings of the 1996 IEEE Twenty-Second Annual Northeast
Conference_Location :
New Brunswick, NJ
Print_ISBN :
0-7803-3204-0
Type :
conf
DOI :
10.1109/NEBC.1996.503203
Filename :
503203
Link To Document :
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