在裝飾紋路當中，雲紋裝飾圖樣扮演著一個十分重要的角色，它是十分常見的一種設計元素，而東方人對於雲紋裝飾圖樣的表現手法有別於西方，以簡單的曲線抽象地呈現雲朵的姿態。非相片寫實電腦繪圖技術(Non-photorealistic Rendering)不同於傳統上的電腦圖學技術，NPR著重於產生各式各樣非傳統光學物理的繪圖效果，最重要的是如何分析各種藝術的結構和技巧，進而加以統整之後，建立系統性的演算法，將其重現於數位空間。本論文便是針對自古所流傳下來的東方雲紋圖樣的設計去做分析，進而發展出一套系統，讓使用者輸入一些簡易的筆畫線條，以此資訊作為雲紋圖樣生成的初始設定，然後自動地產生出具有東方風格雲紋圖樣特徵的結果。

Cloud patterns are very common design elements used in the oriental decoration, and can well harmonize with other ornament patterns. The expression of oriental cloud patterns uses simple curves to abstract the natural phenomenon. Non-photorealistic computer graphics (NPR) technology focuses on analyzing and integrating the principle of the various arts and skills to establish a systematic method to reproduce the stylization. This thesis tries to analyze the structure of the traditional cloud patterns, and building a system to generate the similar style cloud patterns. The system allows users to sketch some simple strokes lines as an initial setting, and then automatically generate various results with the stylization of the oriental cloud pattern.

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