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Pixel and spatial mechanisms of color constancy

机译：色彩恒定的像素和空间机制

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摘要

Color constancy remains an important subject of research on color standards, computer imaging, and human color vision. There are many different theories and algorithms that interpret and predict constancy. This paper analyzes three different approaches that are frequently discussed separately in the literature: pixel-based colorimetric standards of appearance; computer imaging calculations of an object's reflectance; and calculation of appearance using spatial comparisons. This paper compares and contrasts these approaches. Further, it reviews experiments that measure appearance in color constancy in a variety of situations. A pivotal tool in analyzing models of constancy is the correlation of object's reflectance with appearance. Each approach has different interpretation of this correlation. Using measurements of constancy with particular attention to reflectance, illumination, and appearance helps us to see the successes and limitations of each constancy approach.
机译：色彩恒定性仍然是色彩标准，计算机成像和人类色彩视觉研究的重要课题。有许多不同的理论和算法可以解释和预测恒定性。本文分析了文献中经常单独讨论的三种不同方法：基于像素的外观比色标准；物体反射率的计算机成像计算；并使用空间比较来计算外观。本文对这些方法进行了比较和对比。此外，它回顾了在各种情况下测量颜色恒定外观的实验。分析恒定性模型的关键工具是对象的反射率与外观之间的相关性。每种方法对这种相关性都有不同的解释。使用恒定性测量，尤其要注意反射率，照明和外观，这有助于我们了解每种恒定性方法的成功与局限。

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