基于多项式模型法的低端数码相机的颜色特性化

近年来随着数字技术,以及彩色数字图像输入输出设备的不断发展和广泛使用,颜色在不同的设备之间精确的传递或再现成为该领域的重要课题。本论文以彩色数码相机特性化为研究内容,采用多项式转换方法,研究了多项式回归模型不同系数矩阵、不同训练样本对数码相机特性化精度的影响,得出了系数矩阵为11×3多项式模型时误差较小(2.874ΔE*ab)的结论,达到了实用水平。

Study of Low-End Digital Camera Colorimetric Characterization Based on Polynomial Modeling

The camera output RGB signals do not directly corresponded to the tristimulus values based on the CIE standard colorimetric observer,I.e.,a device-independent color space.In this paper,digital camera colorimetric characterization based on the polynomial regression model was studied.The characterization performance was evaluated by experiment of varying coefficient matrix of polynomials and the number of training samples.The better polynomial matrix is 11×3,and the mean color difference between the reproduced colors and target colors is 2.874△E~*ab,which can be applied in common application.