The relation between color discrimination and color constancy: when is optimal adaptation task dependent?

by: AB Abrams, JM Hillis, DH Brainard

Neural Comput, Vol. 19, No. 10. (October 2007), pp. 2610-2637.

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摘要

Color vision supports two distinct visual functions: discrimination and constancy. Discrimination requires that the visual response to distinct objects within a scene be different. Constancy requires that the visual response to any object be the same across scenes. Across changes in scene, adaptation can improve discrimination by optimizing the use of the available response range. Similarly, adaptation can improve constancy by stabilizing the visual response to any fixed object across changes in illumination. Can common mechanisms of adaptation achieve these two goals simultaneously? We develop a theoretical framework for answering this question and present several example calculations. In the examples studied, the answer is largely yes when the change of scene consists of a change in illumination and considerably less so when the change of scene consists of a change in the statistical ensemble of surface reflectances in the environment.

@article{citeulike:1651187, abstract = {Color vision supports two distinct visual functions: discrimination and constancy. Discrimination requires that the visual response to distinct objects within a scene be different. Constancy requires that the visual response to any object be the same across scenes. Across changes in scene, adaptation can improve discrimination by optimizing the use of the available response range. Similarly, adaptation can improve constancy by stabilizing the visual response to any fixed object across changes in illumination. Can common mechanisms of adaptation achieve these two goals simultaneously? We develop a theoretical framework for answering this question and present several example calculations. In the examples studied, the answer is largely yes when the change of scene consists of a change in illumination and considerably less so when the change of scene consists of a change in the statistical ensemble of surface reflectances in the environment.}, address = {fiolalicia@yahoo.se.}, author = {Abrams, A. B. and Hillis, J. M. and Brainard, D. H. }, citeulike-article-id = {1651187}, doi = {http://dx.doi.org/10.1162/neco.2007.19.10.2610}, issn = {0899-7667}, journal = {Neural Comput}, keywords = {adaptation, behaviour, coding, color, journalclub, optimal, visual}, month = {October}, number = {10}, pages = {2610--2637}, posted-at = {2007-09-13 10:15:29}, priority = {2}, title = {The relation between color discrimination and color constancy: when is optimal adaptation task dependent?}, url = {http://dx.doi.org/10.1162/neco.2007.19.10.2610}, volume = {19}, year = {2007} }

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TY - JOUR ID - citeulike:1651187 L3 - citeulike-article-id:1651187 N2 - Color vision supports two distinct visual functions: discrimination and constancy. Discrimination requires that the visual response to distinct objects within a scene be different. Constancy requires that the visual response to any object be the same across scenes. Across changes in scene, adaptation can improve discrimination by optimizing the use of the available response range. Similarly, adaptation can improve constancy by stabilizing the visual response to any fixed object across changes in illumination. Can common mechanisms of adaptation achieve these two goals simultaneously? We develop a theoretical framework for answering this question and present several example calculations. In the examples studied, the answer is largely yes when the change of scene consists of a change in illumination and considerably less so when the change of scene consists of a change in the statistical ensemble of surface reflectances in the environment. IS - 10 JF - Neural Comput SN - 0899-7667 AD - fiolalicia@yahoo.se. EP - 2637 TI - The relation between color discrimination and color constancy: when is optimal adaptation task dependent? VL - 19 SP - 2610 KW - adaptation KW - behaviour KW - coding KW - color KW - journalclub KW - optimal KW - visual AU - Abrams, AB AU - Hillis, JM AU - Brainard, DH PY - 2007/10// UR - http://dx.doi.org/10.1162/neco.2007.19.10.2610 ER -

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