Research On Simulation Techniques Of Traditional Printing Patterns On Cloth

The skill of printing patterns on cloth is a type of ancient, traditional folkcraft. The printing technique, capable of generating rich patterns and abundantcolors, has a unique and characteristic style in its arts. These printing patternson the cloth are often used as the decorations of the cloth and some other kindsof living things. Developing a computational approach to designing printingpatterns on computer, therefore, can not only help designers create the art worksmore easier but also have the potential to protect and inherit this traditionalhandicraft. Since the production methods of the printing patterns have some differentways, the final effects would be different. This thesis mainly studies two kinds ofprinting patterns techniques, the hand-painted printing technique and the printingpatterns with the special batik cracks.This thesis presents a novel computational approach based on the maindirection guided anisotropic diffusion model (MDGADM) to simulate thehand-painted printing patterns on cloth. Firstly, we use the grid model to modelthe cloth structure. Secondly, we input the contour image which can effectivelylimit the degree of the dye diffusion on the cloth. Then, considering both theanisotropic structure of the cloth and the influences from users’ strokes, wepropose the main direction guided anisotropic diffusion model (MDGADM) tocalculate the diffusion of the dyes in the cloth. Other interactions including theadsorption and evaporation are also incorporated to improve the accuracy and therealism. Lastly, we render the vivid hand-painted printing patterns on the cloth.Besides, according to the features of the batik cracks, we propose a physicalmethod based on the extended finite element method and fracture mechanics tosimulate the cracks on the printing patterns. We simulate the special cracks which arenot relevant to the batik patterns. In addition, for the simulation of the cracks whichare influenced by the batik patterns, we use the method of the image-based distancetransform algorithm to determine the starting points of the cracks, and propose tocombine local axis parallel extension area and the boundary of the printing patterns tosimplify the expansion region of the cracks; Finally, we render a realistic printingpatterns with the special batik cracks.