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CRT显示图像的色彩管理新模型

DOI: 10.11834/jig.20150801

Keywords: 显示图像色彩管理,尤尔-尼尔森方程,缩张拟合算法,标准色靶

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Abstract:

目的目前色彩管理模型或是注重呈色原理分析,或是仅控制模型的输入输出两端,导致色彩转换精度不高。鉴于此在分析呈色原理的基础上,提出一种CRT显示图像色彩管理新模型。方法采用标准色靶作为实验样本,结合显示器的呈色原理,以色靶的彩色梯尺区色块代表整个色空间用以推导模型,解决了显示器色彩校正中样本色块选择的难题;随后,重新解释尤尔―尼尔森方程的参数,使原本只适用于印刷网点图像的呈色模型也适用于非印刷网点图像;其次,结合尤尔―尼尔森方程和显示器呈色原理,利用修正后的缩张拟合算法分单色、双色和3色逐步修正和补偿色彩误差,推导出CRT显示器的色彩管理新模型。结果本模型能够提高CRT显示器的色彩管理精度54%以上,能够用于工程实际中的CRT显示器色彩管理。结论借助于其他图像设备的呈色原理,本文模型不仅能提高色彩转换精度,也具备较好的参考借鉴价值。

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