颜色恒常知觉的影响因素探索及其非线性建模

采用计算机仿真技术，研究了照明、表面和背景对颜色恒常的影响，结果表明：照明性质、表面属性以及背景属性均对颜色恒常程度产生显著影响，三者的影响是相互独立的；不同照明性质对颜色恒常程度具有不同影响，中性色照明光下颜色恒常程度较高；人的颜色恒常也依赖于物体的表面属性，对不同的表面进行匹配时，表现出了颜色恒常程度的较大波动；相同背景属性较不同背景属性具有较高的颜色恒常程度。在实验研究基础上建立了非线性颜色恒常模型，该模型对实验数据进行了很好拟合，具有了一定的符合人认知特点的颜色恒常能力。

The Influence Factors and Nonlinear Modeling of Color Constancy

The influence of illuminant, surface, and background on color constancy was investigated using computer simulation technology. The results showed that the characteristics of illuminant, surface, and background independently influenced the degree of color constancy. The degree of color constancy varied with illuminant change and reached the maximum under the neutral illuminant. Furthermore, the degree of color constancy fluctuated with surface variation in the surface matching test, which showed that color constancy was also dependent on the characteristics of the surface. The degree of color constancy in the same background was higher than that in a different background. Based on the results of the present study, a nonlinear color constancy model was established to approximate the test data. The model proved to be able to reflect the mechanism of human color constancy to a certain degree.