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Method and apparatus for estimating a special reflectance distribution or a spectral transmittance distribution using illuminant- independent characteristic parameters
Method and apparatus for estimating a special reflectance distribution or a spectral transmittance distribution using illuminant- independent characteristic parameters
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机译:使用与光源无关的特征参数估计特殊反射率分布或光谱透射率分布的方法和设备
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摘要
A neural network is made to undergo learning such that at least three characteristic parameters, which correspond to an inputted set of color information values when the set of color information values, including at least three color information values, is inputted and which are obtained by multivariate analysis of the spectral reflectance distribution or the spectral transmittance distribution, are outputted. A subject set of color information values is transformed into the characteristic parameters by using the neural network which has completed learning, and a spectral reflectance distribution or a spectral transmittance distribution is estimated by linear polynomial approximation using the transformed characteristic parameters, eigenvectors obtained by the multivariate analysis, and a mean vector of the spectral reflectance distribution or the spectral transmittance distribution.
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