Computer Generated Paper-cutting Style Research And Implementation Of Key Technologies

Non-Photorealistic Rendering (NPR) is a newly developed research area incomputer graphics and, in some fields, NPR is more individually and more artisticallythan photoralistic rendering. Thus, it has a wide range of applications in the fieldsranging form education, entertainment to art.The paper cutting is a traditional folk art in our country. Chinese paper cutting paysattention to carving methods, such as shear, carve and hollow. It tends to use bright andintense colors, which is highly subjective and unusual. Exaggerated appearance andimaginative is a major feature of the Chinese paper-cutting, but due to the difference infolklore and cultural background, paper-cutting has different characteristics in differentregions, such as the atmosphere rough in Shanxi, the elegant paper-cutting inJiangnanand the majestic paper-cutting in Guangdong. Paper cutting is a kind of art thatuse the hand-action called “cutting” on paper materials, thus the limitations make greatscenes and complexity levels difficulty. The hand-made traditional paper cutting isproduced through two conventional methods: scissor cutting and knife cutting. All thesehand-made traditional crafts lead to low efficiency, high consumption and longtime-consuming, which constraint the development of traditional paper cutting. Base onthis peculiarity of paper cut-out,this thesis simulates the pattern of paper cut-out, andrecur this art form in the computer.At first, we analyze the characteristic of paper cut-out, and sort into fourclasses:(1)Basic structure pattern. We use the basic structure patterns to figure thephysique structure of the objects;(2) Special pattern. It includes two category:characteristic patterns and specific patterns;(3) Decorative pattern. Decorative patternscan let the complicated things and the phantasmagoric natural visions to be consecutionand concretion, and can translate them into a more concise and clearer mode. Itembodiment the national peculiarity and the regulation of the art of paper cut-out.Use computer aid to generate the art of paper cut-out, the user can pay moreattention on the creation, some work which is take times you may left to the computer,Furthermore, computer assisted generation of pater cut-out images can make it more easier when you want to change some patterns of the paper cut-out image, you just needselect the patterns, then you can change or modify them to generated a pater cut-outimage with another style. And, computer assisted generaton of paper cut-out imagesmake it possible that the art of paper cut-out can be widely used in the area of vignettedesign, electric art, advertisement, games and carton.Because of the characteristic of paper cutting, there exist some common parts likeheaddress, decorative patterns, etc., that is to say these paper cutting patterns can beused on various forms. If this is generated in computer, the segmentation of the grid hasbeen related. Hence, the grid split algorithm is also improved theoretically in thisarticle.