COLOR CONSTANCY .3. GENERAL LINEAR RECOVERY OF SPECTRAL DESCRIPTIONS FOR LIGHTS AND SURFACES
COLOR CONSTANCY .3. GENERAL LINEAR RECOVERY OF SPECTRAL DESCRIPTIONS FOR LIGHTS AND SURFACES
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DOI：
10.1364/josaa.11.002389
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发表时间：
1994-09-01
影响因子：
1.9
通讯作者：
IVERSON, G
中科院分区：
文献类型：
--
作者：
DZUMRA, M;IVERSON, G
我们提出了一种颜色恒常性算法，该算法使用反射光的量子捕获数据来恢复表面反射率函数和光源光谱功率分布。该算法同时恢复表面和光源的光谱特性。该方法适用于 Maloney 和 Wandell 早期两阶段算法处理的所有情况 [J.选择。苏克。是。 A 3, 29 (1986)] 以及 D'Zmura 和艾弗森 [J.选择。苏克。是。 A 9, 490 (1992)； 10、2148、2166（1993）； 1970 年 11 月（1994 年）]。此外，该方法还可以处理早期算法范围之外的问题。使用这种方法，当提供足够的信息时，三色视觉系统可以恢复对光和表面的任意高精度的光谱描述。我们确定了双线性模型可用于通过新程序唯一恢复颜色属性的条件，并制定了一种算法来检查特定双线性模型是否提供完美的颜色恒常性。这项研究扩展了我们早期开始的对颜色恒常性线性方法的分析 [J.选择。苏克。是。 A 10, 2148, 2166 (1993)]。
We present a color-constancy algorithm that uses quantum-catch data from reflected lights to recover surface reflectance functions and illuminant spectral power distributions. The algorithm recovers both surface and light-source spectral properties simultaneously. The method works in all situations that were handled by the earlier two-stage algorithms of Maloney and Wandell [J. Opt. Soc. Am. A 3, 29 (1986)] and D'Zmura and Iverson [J. Opt. Soc. Am. A 9, 490 (1992); 10, 2148, 2166 (1993); 11, 1970 (1994)]. In addition, the method handles problems that lie outside the scope of earlier algorithms. Using this method, a trichromatic visual system can recover, when provided adequate information, spectral descriptions of arbitrarily high accuracy for lights and surfaces. We determine conditions under which bilinear models can be used to recover color properties uniquely with the new procedure, and we formulate an algorithm for checking whether a particular bilinear model provides perfect color constancy. This research extends our analysis of linear methods for color constancy begun earlier [J. Opt. Soc. Am. A 10, 2148, 2166 (1993)].