Rapid generation method of Wangjiang cross-stitch pattern based on paper-cuts application

Wangjiang cross-stitch is a folk handicraft which is one of the national intangible cultural heritages in China. Due to the development of industrialization Wangjiang cross-stitch is at risk of being difficult to pass on. To enrich the stitch pattern design of Wangjiang cross-stitch we propose a rapid computational generation approach of Wangjiang cross-stitch based on raised paper-cuts by combining with the Wangjiang cross-stitch pattern skeletons image meshing technology and stitch mode. The reason why we choose raised paper-cuts as material of Wangjiang cross-stitch pattern design is that they have certain relevance in pattern specifically they have homology in pattern and subject similarity in pattern characteristics symbolism in pattern conception and relevance in process production. The core idea of the rapid generation method of Wangjiang cross-stitch pattern proposed in this paper is to borrow pattern composition theory of previous studies and combine with the uniqueness of Wangjiang cross-stitch then divide Wangjiang cross-stitch pattern into configuration pattern unit and stitch mode and simulate and recombine these three parts to generate Wangjiang cross-stitching pattern. Firstly as for the pattern configuration of Wangjiang cross-stitch we extracted several classical pattern configurations from the existing book which contains the most complete patterns of Wangjiang cross-stitch. Secondly as for the pattern unit we searched for raised paper-cuts similar to components of Wangjiang cross-stitch such as roundels edge flower and corner flower then we processed them to obtain the pattern unit. Before obtaining the stitch mode there is a key step that aims to obtain stitch filling area. To be specific we embed paper-cut pattern units into the Wangjiang cross-stitch configuration accordingly and the combined paper-cut pattern was subjected to pattern gridding processing. Finally as for the stitch pattern we carried out expert interviews and summarized common stitch mode of Wangjiang cross-stitch. After using computer simulation and compiling the basic stitch units and stitch mode we filled them in stitch filling area finally obtaining Wangjiang cross-stitch pattern generation. Based on this method we used PyQt5 to buildan rapid generation system of Wangjiang cross-stitch and then we conducted pattern generation experiment in the system. Finally the results were generated and we assessed the questionnaires and expert interviews proving that the method provides an efficient transformation tool for pattern innovation design of Wangjiang cross-stitch. To sum up taking raised paper-cuts as the material greatly broadens the space of Wangjiang cross-stitch pattern design and adopting the stitch mode extracted from experts in making Wangjiang cross-stitch pattern makes the stitch modes covered by the generated pattern complete and realizable.