Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (09): 56-61.doi: 10.13475/j.fzxb.20181004806

• Textile Engineering • Previous Articles     Next Articles

Color rendering characteristics of fabric structure based on halftone design of image color

ZHANG Aidan(), ZHOU Jiu   

  1. Silk Institute, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2018-10-26 Revised:2019-06-13 Online:2019-09-15 Published:2019-09-23

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Abstract:

In order to overcome the restriction of color simulation design of jacquard fabric by the color rendering law of shaded weave database, a halftone design method of image color was proposed. The fabric samples were produced based on the halftone design of the grayscale with continuous tone by using three kinds of dot size and four arrangement angles. By the comparison and analysis of the fabric samples, it is shown that the greater the dot size of the halftone design, the more uniform of the lightness difference values of the fabric sample group, but the deficiency is the decrease of the detail performance of the original image while applying to the practical design. In the point of dot arrangement, the fabric structures with 15° and 75° angle are stable than that of the other two angles. Comparing the halftone fabric sample groups with a group of fabric samples using satin shaded weave databases, it is found that the discrete average of the lightness difference value of halftone fabric sample groups is 31.94% lower than that of the latter, which indicating better color uniformity of the halftone design by image color.

Key words: image color, halftone design, fabric structure, lightness difference, color rendering characteristic

CLC Number: 

  • TS941.26

Fig.1

Fifteen grades grayscale of continuous tone and halftone. (a) Continuous tone grayscale; (b) Halftone grayscale"

Fig.2

Four types of distribution angle"

Fig.3

Grayscale with continuous tone and two groups of halftone fabric samples with gradual change effect. (a) Continuous tone grayscale with level 15; (b) Fabric sample group without using weave;(c) Fabric sample group using a pair of weave"

Tab.1

Grade and group numbers of halftone grayscale"

序号 加网线数/
(线数·cm-1)		 组 数 级数
0° 15° 45° 75°
1 8 1 1 1 1 15
2 16 1 1 1 1 15
3 24 1 1 1 1 15

Tab.2

Mean value of lightness of fabric sample groups"

组号 不同大小网点的织物明度均值 影光织物的明度均值
8线数/
cm		 16线数/
cm		 24线数/
cm		 纬向加强 经向加强
A 67.47 67.02 66.47 / /
B 51.97 51.45 51.35 / /
C / / / 49.39
D / / / / 57.02

Fig.4

Curve graph of lightness of fabric samples and grayscale"

Tab.3

Standard deviation values of lightness difference of fabric sample group A"

角度 明度差离散值 均值
8线数/cm 16线数/cm 24线数/cm
15° 0.96 1.36 2.17 1.50
75° 0.81 0.91 1.27 1.00

Tab.4

Standard deviation values of lightness difference of fabric sample group B"

角度 明度差离散值 均值
8线数/cm 16线数/cm 24线数/cm
0° 1.06 1.63 1.82 1.50
15° 0.73 1.14 1.71 1.19
45° 1.08 0.99 2.06 1.38
75° 0.76 1.32 1.84 1.30

Tab.5

Mean values of the standard deviations of lightness difference of four groups"

组号 网点织物明度差
离散均值		 影光织物明度差
离散均值
8线数/cm 16线数/cm 24线数/cm 纬向加强 经向加强
A 0.88 1.13 1.72 / /
B 0.91 1.27 1.86 / /
C / / / 1.70 /
D / / / / 2.11

Fig.5

Colorless simulative jacquard fabric effect based on halftone dot transition. (a) Original image;(b) 8 line/cm fabric effect; (c) 12 line/cm fabric effect; (d) 24 line/cm fabric effect"

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