纺织学报 ›› 2020, Vol. 41 ›› Issue (08): 74-80.doi: 10.13475/j.fzxb.20190702107

• 染整与化学品 • 上一篇    下一篇

纺织品色彩管理色表测量数据的误差优化

应双双, 裘柯槟, 郭宇飞, 周赳, 周华()   

  1. 浙江理工大学 先进纺织材料与制备技术教育部重点实验室, 浙江 杭州 310018
  • 收稿日期:2019-07-03 修回日期:2020-05-14 出版日期:2020-08-15 发布日期:2020-08-21
  • 通讯作者: 周华
  • 作者简介:应双双(1995—),女,硕士生。主要研究方向为计算机在纺织中的应用。
  • 基金资助:
    中国纺织工业联合会应用基础研究项目(J201802)

Error optimization for measuring color chart data in textile color management

YING Shuangshuang, QIU Kebin, GUO Yufei, ZHOU Jiu, ZHOU Hua()   

  1. Key Laboratory of Advanced Textile Materials and Preparation Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2019-07-03 Revised:2020-05-14 Online:2020-08-15 Published:2020-08-21
  • Contact: ZHOU Hua

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摘要：

针对目前纺织品色彩管理中,测量误差引起呈色规律跳变和反演等问题,提出一种基于多方向的曲线拟合算法,并结合每一方向曲线对应的权重系数,对测量数据中误差过大的坏点进行优化。通过客观评价和主观评价对该优化方法的应用效果进行分析。结果表明:多方向曲线拟合优化算法对误差大的数据优化显著,对其他正常数据影响小,且可有效降低色表测量数据误差带来的影响,优化后生成的国际色彩联盟(ICC)色彩特性文件整体平均色差降低12.30%,难打色平均色差降低16.67%,中性灰色平均色差降低16.74%;在软打样过程中,优化后生成的ICC色彩特性文件的打样色差也小于优化前的色差。

关键词: 纺织品色彩管理, 颜色测量, 多方向曲线拟合, 数据优化, 平均色差, 测量误差

Abstract:

In current textile color management, measurement errors are found to cause problems such as the color shade jump and inversion. In this research, a multi-directional curve fitting algorithm combined with the weight coefficient corresponding to each directional curve was proposed to optimize the bad points with excessive error in the measurement data. By analyzing the application effect of the optimization method through objective and subjective evaluation, it is found that the multi-directional curve fitting optimization algorithm works well with data having large errors, and it has little impact on other normal data, therefore effectively reducing the impact of the error from color chart measurement data. The overall average color difference of the International Color Consortium (ICC) Profile generated by the optimization is reduced by 12.30%. The average color difference of the difficult colors is reduced by 16.67%, and the average color difference of the neutral gray is reduced by 16.74%. During the soft proofing process, the proof color difference of the ICC Profile generated after optimization is also smaller than that before optimization.

Key words: textile color management, color measurement, multi-directional curve fitting, data optimization, average color difference, measurement error

中图分类号: 

  • TS194.4

图1

曲线拟合示意图"

图2

空间中过一点的直线示意图"

图3

Lab颜色测量空间"

图4

权重系数计算示意图"

图5

基于多方向曲线拟合的数据优化方法效果示意图"

表1

25组ICC Profile优化前后的色差"

ICC Profile
序号		 整体平均色差 难打色平均色差 中性灰色平均色差
优化前 优化后 优化率/% 优化前 优化后 优化率/% 优化前 优化后 优化率/%
1 0.55 0.49 10.91 2.23 1.75 21.52 0.77 0.77 0.00
2 0.34 0.33 2.94 1.22 1.17 4.10 0.51 0.44 13.73
3 0.47 0.43 8.51 1.65 1.48 10.30 0.70 0.61 12.86
4 0.48 0.42 12.50 1.63 1.45 11.04 0.70 0.59 15.71
5 0.66 0.57 13.64 2.05 1.88 8.29 0.82 0.74 9.76
6 0.32 0.31 3.13 0.96 0.95 1.04 0.46 0.39 15.22
7 0.56 0.53 5.36 2.23 2.15 3.59 0.94 0.93 1.06
8 0.55 0.39 29.09 2.03 1.33 34.48 0.84 0.51 39.29
9 0.36 0.32 11.11 1.06 0.91 14.15 0.52 0.50 3.85
10 0.52 0.49 5.77 1.70 1.48 12.94 0.79 0.68 13.92
11 0.63 0.48 23.81 3.26 1.85 43.25 0.84 0.62 26.19
12 0.61 0.50 18.03 2.84 1.91 32.75 0.78 0.65 16.67
13 0.35 0.34 2.86 1.31 1.07 18.32 0.66 0.51 22.73
14 0.43 0.39 9.30 1.74 1.47 15.52 0.52 0.51 1.92
15 0.36 0.34 5.56 1.40 1.16 17.14 0.57 0.52 8.77
16 0.51 0.37 27.45 2.53 2.06 18.58 0.97 0.48 50.52
17 0.37 0.34 8.11 1.11 1.08 2.70 0.58 0.55 5.17
18 0.52 0.36 30.77 1.72 1.35 21.51 0.76 0.44 42.11
19 0.41 0.37 9.76 1.39 1.24 10.79 0.66 0.46 30.30
20 0.49 0.41 16.33 1.65 1.17 29.09 0.60 0.57 5.00
21 0.34 0.33 2.94 1.30 1.09 16.15 0.54 0.52 3.70
22 0.81 0.62 23.46 4.51 4.03 10.64 1.16 0.88 24.14
23 0.41 0.35 14.63 1.60 1.47 8.13 0.60 0.52 13.33
24 0.46 0.43 6.52 2.08 1.47 29.33 0.91 0.72 20.88
25 0.39 0.37 5.13 1.82 1.43 21.43 0.78 0.61 21.79
平均优化率/% 12.30 16.67 16.74

图6

ICC Profile优化前后色差分布图对比"

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