目的 研究 XGamut软件的分色机制,构建分色预测模型验证分色机制的正确性,评估多通道高保真分色相较传统4色分色的输出效果。方法 以CGS公司旗下的XGamut软件为研究对象,通过软件测试和实验分析,进行分色机制研究;基于随机森林构建分色预测模型,以Pantone色库进行训练集和测试集的划分,对模型预测效果进行验证。以Pantone V3色库光谱数据为基准,使用XGamut和ColorTuner软件进行7色分色与4色分色实际打样,采用色差（dE2000）、同色异谱指数（MI）及均方根误差（RMSE）等指标,对2种分色方式的数据进行量化评估。结果 构建的分色预测模型能够准确地预测XGamut的分色结果,验证了分色机制的正确性。实际输出结果表明,多通道分色结果优于4色分色。结论 揭示了XGamut的高保真分色逻辑,通过分色预测模型验证分色机制的正确性。实际打样数据显示,7色分色较传统4色分色具有更大的色域空间和更强的专色还原能力。
Abstract
The work aims to study the color separation mechanism of XGamut software, construct a color separation prediction model to verify the correctness of the color separation mechanism, and evaluate the output effect of multi-channel high-fidelity color separation compared with the traditional four-color separation. With CGS's XGamut software as the object, the color separation mechanism was studied through software testing and experimental analysis. A color separation prediction model was developed using the random forest algorithm, with data from the Pantone color library divided into training and test sets to validate the predictive performance of the model. With the spectral data of the Pantone V3 color library as the reference, seven-color and four-color separations were generated using XGamut and ColorTuner, respectively, followed by proofing experiments. The outputs of the two separation methods were quantitatively evaluated using color difference (dE2000), metamerism index (MI), and root mean square error (RMSE). The results showed that the proposed prediction model can accurately predict the separation results of XGamut, thereby verifying the correctness of its separation mechanism. The proofing results further indicate that multichannel color separation outperforms traditional four-color separation. In addition, this study elucidates the high-fidelity color separation logic of XGamut and verifies the correctness of the color separation mechanism through the color separation prediction model. The proofing results demonstrate that seven-color separation provides a wider gamut and stronger spot-color reproduction capability than conventional four-color separation.
关键词
高保真分色 /
XGamut /
同色异谱 /
色彩管理 /
随机森林
Key words
high-fidelity color separation /
XGamut /
Metamerism /
color management /
random forest (RF)
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参考文献
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基金
广东省教育厅科研项目资助（2024CJPT002）
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