Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (03): 153-159.doi: 10.13475/j.fzxb.20180300508

• Management & Information • Previous Articles     Next Articles

Modeling and reconstruction of blue calico patterns

TAO Chen1, DUAN Yafeng1, XU Rongrong1, YANG Jianping1(), ZHOU Jiu2   

  1. 1. College of Textile and Garment, Shaoxing University, Shaoxing, Zhejiang 312000, China
    2. Silk Institute, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2018-03-01 Revised:2018-03-15 Online:2019-03-15 Published:2019-03-15
  • Contact: YANG Jianping E-mail:xtao98@qq.com

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Abstract:

Aiming at the modeling in digitalized innovation of blue calico patterns, a model for structuring blue calico elements was proposed based on cardinal splines, in which the rigidity of shape was expressed by the tension coefficient, and the concavity and variety were realized by configuration of the knots. Also the expressing of more complex elements by generalization of the model was discussed. The contour tracing technique was employed to extract pattern elements from the images, and the closest model instance was found out based on invariance of the Hu moments, then the model instances were transformed respecting to gravity, acreage and coincidence to meet the pattern elements so as to achieve digitalization of the whole pattern. The mapping function was introduced to create new patterns by filtering the model parameters, and the element model was applied to the pattern skeleton to modify it and bring about more outstanding innovations. The results show that the proposed methods have fine accuracy and efficiency in modeling and reconstruction as well as rich creativity in blue calico pattern innovation.

Key words: blue calico, pattern, model, reconstruction, spline

CLC Number: 

  • TP391.41

Fig.1

Sample of blue calico pattern"

Fig.2

Influence of tension coefficient on spline"

Fig.3

Closed figuires composed of cardinal splines"

Fig.4

Element model"

Fig.5

Pattern elements expressed in model instances. (a)Shell; (b)Rice; (c)Petal"

Fig.6

Schematic of contour tracing"

Fig.7

Procedures of element extraction. (a) Original image (grayed); (b) Median filtering; (c)Threshold segmentation; (d)Contour tracing"

Fig.8

Instance selection based on Hu moments. (a) Pattern element; (b) slosest model instance"

Fig.9

Procedures of instance transform"

Fig.10

Reconstructed pattern"

Fig.11

Modifications by mapping functions. (a) Mapping of tension coefficient; (b) Mapping with conditions"

Fig.12

Complex elements expressed in generalized model. (a)Scale pattern; (b)Treasure pattern; (c)Starlight pattern"

Fig.13

Generalized model. (a)Number of knots; (b)Range of activity"

Fig.14

Two basic skeletons. (a) Circular; (b) Threaded"

Fig.15

Model as skeleton"

Fig.16

Skeleton embodiments. (a) Columnars on square skeleton; (b) Gradual change of columnar stiffness; (c) Shell skeleton (circular); (d) Shell skeleton (threaded); (e) Gradual change of petal size; (f) Size change and nonlinear distribution"

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