目的 为确定光柱全息印刷产品的“可察觉”和“不可接受”色差阈值,进而制定其颜色质量评价方法。方法 本文使用喷墨打印机muton valuejet 628MP,围绕CIE推荐的9个颜色中心,以光柱全息纸张为承印基底,共制作了465对,平均ΔE*ab色差为2.23的颜色样本。组织17名色觉正常观察者开展了样本对间的色差评价实验。结果 基于CIELAB和CIEDE2000公式确定光柱全息印刷品的“可察觉”色差阈值为0.92和0.31,“不可接受”色差阈值为3.10和2.16。结论 企业在评定产品“不可接受”色差阈值的同时,可设定色差阈值的一级指标。同时,可通过确定设定蓝色和紫色区域样本的“不可接受”色调差阈值的二级指标,提高计算色差与目视色差间的一致性。
Abstract
The work aims to determine the "perceivable" and "unacceptable" color difference thresholds for holographic prints with light pillars and establish their color quality evaluation methods. The Muton ValueJet 628MP inkjet printer was employed to produce 465 pairs of samples with average color difference (ΔE*ab) of 2.23, surrounding the nine CIE recommended color centers and using the holographic paper as the substrate. Seventeen observers with normal color vision were organized to carry out the color difference evaluation experiments. According to the CIELAB and CIEDE2000 formula, the "perceptible" color difference threshold of holographic prints with light pillars was determined to be 0.92 and 0.31, while the "unacceptable" color difference threshold was 3.10 and 2.16. When it comes to the evaluation of "unacceptable" color difference, the color difference thresholds can be used as the primary indicators, and then, for blue and purple samples, the "unacceptable" hue difference threshold can be set to improve the consistency between the calculated color difference and the visual color difference.
关键词
视觉光学 /
光柱全息印刷品 /
可察觉色差阈值 /
不可接受色差阈值 /
色调差阈值
Key words
visual optics /
holographic prints with light pillars /
perceivable color difference threshold /
unacceptable color difference threshold /
hue difference threshold
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基金
福建中烟工业有限责任公司科技项目(FJZYKJJH2025ZD026)