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。文章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20×3多项式模型时误差较小（2.095ΔE*ab）的结论，达到了实用水平。

The camera output RGB signals do not directly corresponded to the tristimulus values based on the CIE standard colorimetric observer, i.e., it is a device-independent color space. In this paper, digital camera colorimetric characterization based on the polynomial regression model is studied. The characterization performance is evaluated by experiment of varying coefficient matrix of polynomials and the number of training samples. The results show that the better polynomial matrix is 20×3, and the mean color difference between the reproduced colors and target colors is 2.095ΔE*ab, which can be applied in common application.